Farmers’ Market Overnight Breakfast Egg Casserole
~ Loaded with bountiful veggies, this hearty egg bake is deliciously satisfying, without weighing you down! Unlike many recipes, this egg casserole is made without bread. And since you can make it the night before, it’s perfect for holiday brunches or make-ahead family breakfasts! ~
This Recipe Is: • Freezable • Make Ahead • Gluten Free •
I have a little backstory about our blog and this recipe … and the friendship that inspired them both. But, first things first, right? Before I dive into all that, I know you’re truly here for the recipe … and you might want to take a peek at our little video tutorial that showcases this egg casserole recipe (and how easy it is to make). No worries! I get it … go ahead and check it out!
Video Tutorial
Yum, right?!? Yeah. It really is a favorite! You definitely do want to make this! But if you wanna know the backstory, read on here before you head to the recipe card …
Sooooo … Ever since we became friends a few years back, Gretchen has laughed a lot.
At me.
Generally while also shaking her head with that expression of wide-eyed disbelief that says “I think you might actually be certifiably nuts, but you’re pretty fun to hang out with, so I’m just gonna humor your latest insane idea/crazy suggestion/I-seriously-don’t-know-where-you-come-up-with-this-stuff comment.”
Although, to be fair, I guess I probably spend just as much time giggling and shaking my head right back at her.
In fact, I’m pretty sure that’s how we ended up with a blog. We have no idea anymore whose you’ve-got-to-be-kidding idea this originally was, but apparently the other one decided to go along with it.
So here we are.
And isn’t that just one of the very best things about good friends?
They give you an entirely different perspective on the world, without ever judging your own views and ways of doing things (even if they do think you’re a little bit crazy!). And sometimes you actually learn a lot along the way.
I especially notice this with Gretchen since we spend so much time working together in the very personal spaces of each other’s kitchens (rooting through each other’s cupboards and refrigerators), discussing what flavor combinations taste terrific, and chatting about our families’ food preferences and traditions.
For example …
• She organizes things in her kitchen totally differently than I do (as in, she actually organizes things).
• While it seems completely clear to me that the fastest way to deal with a clove of garlic is with a chef’s knife, it has always been absolutely obvious to her that the best way to tackle garlic is with a garlic press. Huh. Go figure. (Side note: I absolutely swear by my 8″ Victorinox chef’s knife – unbeatable price and a top Cook’s Illustrated rating convinced me to buy it, and I’ve never looked back.)
• Oh – and that amazing little contraption she calls a can opener still remains a mystery to me no matter how many times she shows me how to use it. Never seen a can opener like that before! But I have to admit that it works like a charm (and I kinda covet it). Who knew?
• Yeah, and she fastidiously pre-rinses every dish before it goes in the dishwasher. I pretty much figure that’s why I bought a dishwasher in the first place, and only worry about any food particle bigger than an entire hamburger. We’re just different that way, ya know?
And really, our differences make us – and this blog – so much better. We’re constantly questioning and pushing each other to retest and perfect recipes, or to clarify techniques that might not be clear to anyone else, even though they seem crystal-clear to one of us.
This all leads us to the story of this breakfast casserole.
Because … holiday food traditions? Well, we’ve learned a few things from each other there, too!
I mean, in my family, holidays like Easter and Christmas involve gaggles of family members and generally require multiple parties. At least one gathering’s always a brunch (gotta start early if you’re gonna cram in that much partying!). And it’s always just been a no-brainer for all of us that this meant make-ahead breakfast casseroles.
As much as we love cooking, we sure don’t want to get up at the crack of dawn to do it! (We may start our parties early, but we’re for sure not crack-of-dawn people!)
And, seriously – who wants to be stuck in the kitchen when there are Easter eggs to hunt and raucous laughter emanating from the next room?
Gretchen’s side of the family doesn’t live quite so near, so morning festivities and massive brunch parties aren’t really their thing.
And she was a little surprised when I passionately explained how (obviously!?!?!) everyone absolutely needs make-ahead breakfast casseroles for holidays. I mean … it just seemed so clear to me that everyone did!
But, of course, she loves any recipe that’s an easy make-ahead. So, it wasn’t actually all that hard to convince her that if she ever begins hosting brunch bashes, overnight casseroles are the only way to go!
And she was totally on board when I said that we’d clearly, therefore, need to do a round-up of make-ahead breakfast ideas for last Christmas! As we were compiling those recipes, I was sure I’d find a recipe Just.Like.This.One. It seemed perfectly obvious – the typical hearty egg casserole made fresher, lighter, healthier, yummier by tons of great veggies. It was the recipe I really wanted to find – surely everyone had a recipe Just.Like.This.One. Right?
Apparently not.
If you check out our THK round-up of make-ahead breakfasts, you won’t see this recipe, or even one just like it.
So, since I didn’t find it, I created my own.
And I love it. We all love it!
It’s got all the hearty, fuel-you-up-to-finish-hunting-down-that-last-impossible-egg ingredients you’d expect from an egg casserole, but with leaner sausage and cheese, plus tons of delicious and nutrition-packed veggies.
It’s like a farmers’ market in your baking pan (you know … hence, the name …).
Make It Ahead … the Night Before!
Best part of all? You can prep the entire casserole the night before (and much of the work can be done even further ahead than that!), so you don’t miss one second of the action on the morning of your brunch! Perfect!
Your oven does all the work while you discover the last, impossible-to-find egg (what was the Easter Bunny thinking on that one????).
Meal Prep and Freezing Options!
Also perfect?
Leftovers reheat beautifully for easy breakfasts all week long! It’s a great little recipe for those of you who like to meal prep to simplify busy weeks.
In fact, I often make this just for my family of four on the weekend, and then enjoy quick, ready-to-reheat breakfasts for days! Honestly, I was truly surprised how well this reheats – it’s just as good warmed up three or four days later!
It also freezes beautifully. Just portion out individual servings, wrap them in plastic, and freeze them in a zipper bag. A quick tango with your microwave, and they’ll be scrumptious all over again!
It’s Even Portable!
And for all those on-the-go mornings, just rewarm some of this breakfast casserole and wrap it inside a whole-grain tortilla. You’re out the door in a flash, with a fantastic, portable breakfast to power you through your busy day.
When it comes to easy, delicious, healthy make-ahead breakfasts (and particularly this fantastic overnight egg casserole), Gretchen and I definitely agree … fabulous, all around!
But it for sure won’t be long before she finds some other reason to giggle and shake her head at me.
Or until I stare in wide-eyed wonder at her as she organizes something that doesn’t actually need organized, or elaborates on the next crazy scheme that she will somehow eventually talk me into!
That’s just how friends are.
Farmers' Market Overnight Breakfast Egg Casserole
Loaded with bountiful veggies, this delicious egg bake has been winning raves for years and years! It's great for holiday brunches or make-ahead breakfasts. And, since this egg casserole is made without bread, it's even gluten free, too!
• Freezable • Make Ahead • Gluten Free •
Ingredients
- 1 pound sweet Italian turkey sausage
- 1 1/2 cups diced sweet onion (from about half a large onion)
- 8 ounces fresh sliced mushrooms
- 2 cloves garlic, minced
- 2 cups frozen shredded hash brown potatoes (sometimes labeled "country style")
- 2 cups shredded reduced-fat sharp cheddar cheese, divided
- 1 cup diced green pepper (from about 1 small-medium pepper)
- 2-3 plum tomatoes, seeded and diced (to equal about 1 - 1 1/4 cups)
- 1/2 cup chopped green onions (from about 6 onions)
- 12 eggs
- 1 3/4 cup nonfat milk
- 1 1/2 teaspoons dried parsley
- 1 teaspoon kosher salt
- 1 teaspoon dried basil
- 1/4 teaspoon black pepper
Instructions
- In a large non-stick skillet (I like this one) over medium heat, cook sausage, onions, mushrooms, and garlic until sausage is no longer pink and mushrooms have given off some of their liquid, about 10 minutes. Throughout cooking, stir to crumble sausage and break up mushrooms. (You can leave the mushrooms in larger slices or break them into almost unnoticeable little pieces as you crumble the sausage.) Drain the liquid.
- In a 9x13 pan coated with cooking spray, layer potatoes (there is no need to thaw them), sausage mixture, 1 cup cheese, green peppers, tomatoes, and green onions.
- In a medium bowl, combine eggs, milk, parsley, salt, basil, and pepper. Whisk thoroughly to combine, then add remaining 1 cup of cheese and whisk again. Pour egg mixture evenly over other ingredients in baking pan. Cover with plastic wrap and refrigerate overnight. (Alternately, you can bake this casserole immediately.)
- In the morning, preheat the oven to 375°F.
- Bake casserole, uncovered, for about 60-70 minutes, or until egg in middle is just set and edges are lightly golden brown.
- Remove from oven and allow to cool for 10 minutes before cutting and serving.
Notes
Make-Ahead Options:
If you need to start on this recipe even earlier than the evening before your brunch, you can cook the sausage, onions, mushrooms, and garlic earlier in the day or a day ahead, and also chop the green peppers and green onions. Refrigerate the sausage mixture and the chopped peppers and onions in separate containers until assembling the casserole.
After the casserole is baked, you can refrigerate leftovers and reheat individual portions in the microwave for quick breakfasts all week.
This also freezes wonderfully. Pre-portion leftovers, wrap each portion individually in plastic, and store in a zipper container in the freezer. Microwave on several layers of paper towel to reheat as needed. After being frozen, the veggies let off water when reheated, but this casserole is still surprisingly terrific, so don't let that liquid worry you.
For Breakfasts On the Go (Or Snacks and Dinners on Busy Evenings): Nestle re-warmed slices of the casserole into a tortilla for a wrap.
Breakfast for Dinner: You can make this in the morning and refrigerate until baking, or prep it in the afternoon and then cook it immediately, for a fun "breakfast for dinner" option.
Nutrition Information:
Yield: 16 servings Serving Size: 1 pieceAmount Per Serving: Calories: 187Total Fat: 8gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 169mgSodium: 615mgCarbohydrates: 11gFiber: 2gSugar: 4gProtein: 18g
Nutrition information should be considered an estimate only, and may vary depending on your choice of ingredients or preparation. No guarantees are made regarding allergies or dietary needs. Always consult a physician or dietician for specific advice and questions.
Plan to make this after Xmas when friends visit….easy and looks yummy! Wondering if it’s pretty true to being done in the time allotted…..don’t want to under or over bake. Also, can one cut this in half and put it in a square pyrex dish also?
Hi Toni! I’m so thrilled you’re making this to share with friends! Regarding bake time for this breakfast casserole – there are a lot of factors that can affect the precision there, but one of the biggest is how exactly true to temp your oven is. Also, if you frequently open the oven door to check on the casserole (which lets a lot of heat out each time), if your refrigerator has kept it a few degrees cooler or warmer overnight, etc. – that can all make a difference. Ideally, in perfect conditions, it should be pretty true (but remembering that your oven and my oven may not be calibrated exactly the same, etc.), which is why we give a range of bake times. The most important keys to success will be those doneness factors – looking to see if the eggs are just set in the middle (but not yet getting hard and over-cooked) and if the edges are turning lightly golden but not getting burned. I hope that helps!
Also, I’ve never tried splitting the casserole in half, into two square baking dishes, but I see no reason why that wouldn’t work. The main thing you’ll need to do is to adjust the bake time, and having never done this before, I can’t say for sure what a good bake time would be (I’d guess around 40-55 minutes). Just peek at the smaller casseroles often (starting earlier than you think you’ll need to), and look for those doneness indicators (just set in the middle, golden brown at the edges).
Good luck – and I hope you have a wonderful visit with your friends! 😀 ~Shelley
Do you think I can make this ahead of time and freeze the whole dish and reheat in the oven later?
Hi, Jenn! We’ve had a couple of other readers, ask this question, too – so you’re definitely not alone in wondering this. Basically, here’s what I told them: I’m really not entirely sure how well this would freeze prior to baking, (since I’ve never personally tried it). However, I’m concerned that this particular breakfast casserole might not work very well when frozen before baking, primarily because of some of the vegetables in it. In particular, I think the tomatoes and mushrooms will probably release an undesirable amount of extra water during the process of freezing and then thawing, which could affect the final texture and consistency of the casserole. (You’ll notice that, in our notes on the recipe card about freezing AFTER baking, we mention that additional water is still released at that point – but it’s not really a problem in that stage of preparation.) As I told the other ladies, though, since I’ve never tried pre-freezing this breakfast bake, I can’t say for sure, and we all just might be pleasantly surprised at how well it actually works! Definitely – if you decide to give it a try, I’d really love to hear how it works for you! Good luck – and I hope you have a wonderful, happy holidays season! ? ~Shelley
I am having a problem finding shredded hashbrowns. Can cubed hashbrowns be substituted?
Hi Debby! I’ve never personally tried the cubed (because I’ve never had trouble finding the shredded – I’m so sorry you’re having difficulty with that!) – but I would guess that they would also work just fine for this breakfast bake. Of course, the texture of the finished casserole will be a bit different, with more prominent chunks of potato rather than an even, bottom layer, but from a technical perspective, I would think that it would work well. I’d love to hear how it goes! ~Shelley
I just made this and used cubed hash browns and it turned out perfect!!! I love this recipe!
Hi Rachel! Thank you so very much for popping back to help answer Debby’s question about this breakfast casserole – definitely a question I’m sure other readers might have, as well. It’s so sweet of you to take the time, and truly helpful! And I’m thrilled that you loved this recipe – totally makes my day to hear such great feedback! Thanks bunches, and have a wonderful week! 🙂 ~Shelley
Can you make this without the hash brown potatoes? I’ve been looking for an egg brunch casserole without bread or potatoes and this one looks delicious.
Hi Paula! Great question! I’ve honestly never tried that, so I can’t say for sure, but I think it should work fine. The main difference I can envision is that it wouldn’t have as much textural interest and might be a bit more “egg-y” in consistency. If you try it, I’d love to hear how it works out! Good luck! 🙂 ~Shelley
I’m insulin resistant and I’ve been using Ezekiel bread in my breakfast casserole. Without bread or potato, it’s not really casserole, it’s more of a frittata.
I’ve heard wonderful things about Ezekiel bread, Lori, although I’ve only tried in a few times here at home and haven’t used it in a breakfast bake or breakfast casserole – so I really appreciate the suggestion, and I’m sure other readers (especially ones with dietary restrictions such as yours) will, too! Thanks so much! ~Shelley
This looks so delicious and colorful, Shelley!! I love hearty breakfasts like this one and I’m sure it would be great for brunch as well. 🙂 I really wanna try it, but I’m vegan so I’ll just replace the milk with plant-based milk (I read in the comments that someone already tried this) and use vegan cheese instead of regular cheese.I made a hash brown breakfast casserole some time ago and I used silken tofu, turmeric and kala namak instead of the eggs (http://veganheaven.org/recipe/vegetarian-breakfast-casserole/) and it turned out really delicious, so I’ll just try this again using your recipe. 🙂 Can’t wait to give it a try soon!!
Best,
Sina
Hi, Sina! I’m so thrilled for you to try this breakfast casserole, and I love all your suggestions for adapting it to fit your vegan diet! I love when readers can use our recipes as a springboard to create new family favorites that are truly their own! This particular breakfast casserole recipe has been crazy-popular, in part because it’s a gluten-free breakfast casserole recipe, and so many similar recipes use bread as a base (instead of the potatoes). Thanks bunches for sharing your great ideas for taking this to a whole new level, so other readers can consider trying a vegan spin, too! I’ve never worked with kala namak – what a great idea and so interesting as a technique for adding that egg flavor to the casserole! I’m just really delighted you stopped by and took a moment to offer so many ideas! 🙂 Have an awesome day! ~Shelley