Breakfast Strata (with fillings you choose)

The essence of a breakfast strata is eggs, milk, cheese and bread. The personality comes from great fillings – choose the ones you like. Assemble the casserole the night before and pop it in the oven the next day for a great comfort food dish. 

If you’re looking for a make-ahead breakfast casserole, this is a great one. Versatile, easy to make with our step by step instructions and delicious with its pillow-y moist texture.

baked breakfast strata with spinach, mushrooms and cheese in casserole dish f

A strata is perfect entertaining fare for a weekend breakfasts, holiday breakfasts, brunch or lunch. It’s like a savory bread pudding.

This is a ‘make it your own’ simple recipe for strata. You can stick to the basic core ingredients and serve it with a topping or you can choose a few fillings that:

  • suit the preferences of your guests
  • match what you have in the fridge or
  • are easy to prepare 

The recipes on the internet are very similar for breakfast strata. I scoured many of them for good tips to share along with the trick I discovered on my own (see shortcuts below). 

A breakfast strata recipe can stand on its own or pairs well with a tropical fruit salad or a fig salad with pomegranates. A smoothie on the side is another good option. 

If you prefer a make-ahead breakfast casserole that’s sweet instead of savory, try our Apple French Toast Casserole or Sinful Baked French Toast Casserole

Why a breakfast strata works well for entertaining

Day ahead prep: The great thing about a strata recipe is being able to assemble the whole thing the day before, allowing you to concentrate on other tasks for your breakfast or lunch the next day. 

Different strokes for different folks: The other plus is being able to divide the basic mixture with different fillings into two different casseroles to cater to different tastes. I did this the other day with my daughter (the other kook) who is a vegetarian and her husband who is not. The vegetarian strata included onions, mushrooms and spinach. The non vegetarian version included sausage, onions and spinach.

Tailor To Your Taste

Check out these variations and substitutes to try for your make-ahead breakfast casserole.


  • Anything goes including using crusts or no crusts. Stale bread or leftover bread is fine.
  • I love using Challah. Most strata recipes use a large Italian bread, but pumpernickel, French bread or brioche all work well.
  • Even gluten-free bread.


  • I use a Gruyere and Parmesan combination.
  • Also try sharp Cheddar cheese, Fontina, Mozzarella or Monterey Jack.
  • If you really love cheese, feel free to add more.

Milk/Cream options

  • Use any combination of milk and cream (depending on the level of richness you like) – and any type of milk.
  • If you want to lower calories and fat, use 2% milk and low fat cheese


  • All fillings should be cooked except asparagus (which will have enough time to cook in the oven if not too thick) and green onions
  • Great add-ins are caramelized or sautéed onions, spinach, asparagus, cherry tomatoes, bell peppers, mushrooms, bacon, ham, sausage.
  • Crumbled goat cheese can be added as well.
  • For a sweet strata, skip the cheese and add berries or bananas for the filling. And a splash of vanilla.


  • I use thyme, Dijon mustard, salt, black pepper and a dash of nutmeg.
  • You could also try paprika, a bit of hot sauce, rosemary, marjoram or dry mustard.


  • If you want to stick to a no-filling strata (almost like a savory bread pudding), you can use toppings to enhance the flavors such as a chutney, Greek yogurt or sour cream with chives.

FAQ about strata

How will I know when the strata is fully baked?

The length of cooking depends on how thick the strata is in the pan. The strata is ready when it doesn’t jiggle in the center when you shake it or when a toothpick comes out clean. Try not to overcook the strata or it will become dry.

Can I bake the breakfast strata right away instead of leaving it in the fridge overnight? 

It is important for the bread to absorb all the liquid egg mixture, so it’s best to wait at least 30 minutes (60 minutes is even better) before baking.



  • Use pre-grated cheeses.
  • Try fillings that don’t need to be cooked (e.g. asparagus, green onions) or that are pre-cooked like ham.
  • Process shortcut: Many recipes will tell you to use layers of bread, cheese and fillings, then pour the egg and milk mixture on top, pushing things around to make sure everything is covered. My trick is to combine the entire mixture in one bowl, then spoon it into the casserole dish. Much easier. (I like to get from point A to point B the fastest way possible)

Make Ahead 

  • A strata is the perfect make-ahead dish the day before to be served to next morning. See instructions in the recipe. 

Other breakfast recipe ideas you might like

Or check out our full list of vegetarian brunch recipes for Mother’s Day.

Breakfast strata – step by step

bread, eggs, milk/cream, Dijon, salt, pepper, nutmeg, cheeses
Basic Ingredients: bread, eggs, milk/cream, Dijon, salt, pepper, nutmeg, thyme, cheeses – plus 2-3 fillings of your choice
cooked onions, spinach and sausages in bowl
Cook or prepare fillings you like. This one has sausage, caramelized onions and spinach.
cooked spinach, mushrooms and onions in bowl
This filling is vegetarian and has caramelized onions, mushrooms and spinach.
strata mixture in bowl
Whisk together eggs, milk/cream and seasonings in a large bowl. Stir in bread cubes, fillings and most of cheeses (leave some for topping) until well combined.
strata mixture in 2 casserole dishes with grated cheese on top
Transfer mixture into one large or two smaller casserole dishes that are sprayed with oil or smeared with butter. Let sit for 30 minutes before baking. Or, place in fridge, covered, overnight.
inside of breakfast strata in casserole dish
Bake at 350F/176.6C until puffed and golden and center doesn’t jiggle when shaken.
breakfast strata in casserole dish p
baked strata in casserole dish on table
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4.94 from 66 votes

Breakfast Strata (with great fillings)

The essence of a breakfast strata is eggs, milk, cheese and bread. The personality comes from great fillings – choose the ones you like. Assemble the night before. Pop the casserole in the oven the next day for a great comfort food dish.
Prep Time25 minutes
Cook Time45 minutes
Total Time1 hour 10 minutes
Course: Breakfast, brunch, Main Dish
Cuisine: American
Servings: 8


Core ingredients

  • 8 cups bread, any kind, cut into 1 inch cubes (3/4 large loaf, 11-12 slices, 12 ounces)
  • 8 -10 large eggs (about 2 cups)
  • 2 3/4 cups (660ml) whole milk or half and half cream (or any combination of the two)
  • 1 1/2 cup (125g) grated Gruyere cheese (6 ounces) – cheddar cheese ok too.
  • 1/2 cup (41g) grated fresh Parmesan cheese


  • 2 tablespoon Dijon mustard
  • 1 teaspoon dried thyme
  • 1 1/2 teaspoon kosher salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg (optional)

Fillings (choose 2-3), Note 1

  • 10 ounce package chopped frozen spinach; 1 large onion; 8 -10 breakfast sausage links; 8 slices bacon; 2 cups diced cooked ham; 16 ounces mushrooms chopped; 1/2 cup green onion chopped. Other veggies like red peppers or sweet potatoes.


  • PREPARE PANS: Butter or spray with oil one 9×13 inch (3 quart) dish or two 8×8 (2 quart) pans.
  • PREPARE FILLINGS: Choose 2-3 options. For vegetarian strata, I use spinach, onions, mushrooms. For meat-based, I use sausage, onions, spinach. 
    Spinach: Defrost and squeeze water out using hands or paper towels. Get as much water out as possible. 
    Onions: Dice a medium onion or chop in food processor. Sauté in large skillet in 2 teaspoons olive oil on medium heat until translucent (or cook 25-30 minutes, stirring, to caramelize, adding 1/2 teaspoon sugar to speed up caramelization). Sprinkle with a pinch of salt.
    Mushroooms: Sauté in butter or olive oil for 5-7 minutes on medium-high heat. Sprinkle with salt and garlic powder.
    Sausage: Pan fry or grill until no longer pink on medium-high heat. Cut into small pieces. Or remove from casings and sauté ground sausage until cooked.
    Bacon: Fry or microwave. Or bake at 400F for 18-20 minutes. Crumble.
    Green Onions or Ham: Chop. No need to cook.
  • PREPARE CORE INGREDIENTS: Cut bread (with or without crusts) into 1 inch cubes. Measure 8 cups packed. Place in large bowl. In separate bowl, whisk together eggs, milk and all seasonings. Grate cheeses.
  • ASSEMBLE AND REFRIGERATE: Add to large bowl with bread: egg mixture; the vegetable filling; and cheeses (reserving 1/2 cup cheese to sprinkle on top). Mix lightly to combine well. Pour into prepared casserole dish or pan(s). Sprinkle on remaining cheese. Cover with plastic wrap and refrigerate or aluminum foil for at least 30 minutes (1 hour is better) or overnight.
  • BAKE AND SERVE: Heat oven to 350F/176.7C. Remove strata from fridge. Uncover and bake for 40-50 minutes until puffed and golden brown on top – and just until the center doesn't jiggle when you shake the pan. Toothpick inserted in center should come out clean. If using a slightly bigger pan, bake 5-10 minutes less as strata will be thinner. Don't overbake as the strata will become dry. Serve warm. Garnish with sour cream if desired.

Recipe Notes

  1. Fillings: Other filling options include bell peppers, cherry tomatoes, cooked ham, asparagus. All fillings should be cooked except asparagus (which will have enough time to cook in the oven if not too thick) and green onions. Crumbled goat cheese can be added as well (about 1/2 cup).
  2. Make Ahead: Baked breakfast strata can be kept in the fridge for 3-4 days. Strata can be frozen, covered, for up to 3 months. Defrost on the counter before baking the next day or overnight in the fridge. 
Nutrition Value estimates are for the basic strata without the fillings. The nutrition values for the fillings will depend on which you choose. 


Calories: 387kcal | Carbohydrates: 33g | Protein: 24g | Fat: 18g | Saturated Fat: 9g | Cholesterol: 203mg | Sodium: 1049mg | Potassium: 309mg | Fiber: 3g | Sugar: 8g | Vitamin A: 609IU | Vitamin C: 1mg | Calcium: 523mg | Iron: 3mg
Tried this recipe?We’d love you to rate it above under ‘rate this recipe’ or in the comment section below. Thanks!

This recipe was inspired by Epicurious, Once Upon a Chef and The Chunky Chef. 

4.94 from 66 votes (59 ratings without comment)

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Recipe Rating


  1. 5 stars
    I have tried dozens of breakfast casseroles over the years but my family could not stop raving about this one when I made it this week. The flavor was perfect!

  2. 5 stars
    This got a great review on Christmas morning. Used sour dough bread and mushrooms and spinach, plus half and half – everything else recipe-followed. Made it the night before but did get up to pop it in the oven at 6:30 since it takes 45 minutes in the oven. Will be serving this each Christmas morning going forward!

  3. 5 stars
    I made this for christmas for family — it was a hit! I baked french bread (bought par baked, so just 8-10 mins in the oven), and had sausage taken out of the casing, rosemary, and spinach. Delicious, and looked so beautiful on the table. Thank you for this recipe! I will certainly be using it again!

    1. Happy it was a hit! This recipe, in fact, has become very popular, even beyond holiday times. We really appreciate you taking the time to leave a comment 🙂

  4. 5 stars
    I’ve made a number of strata’s over the years but this is the new fave!!
    I added fresh chopped spinach, diced onion, chicken sausage, asparagus and cherry tomatoes. Delish 👍

  5. 5 stars
    If I bake it ahead. How do I reheat it to serve? Having friends and family over after a play and will not have an hour to preheat oven and cook it.
    Looks delicious! Thank you!

    1. To reheat the baked strata from the fridge, cover it well with foil (so it doesn’t dry out) and reheat for 20-30 minutes at 350F in the oven. You can also reheat it in the microwave (covered in plastic wrap) for a few minutes, but it may not heat as evenly. Hope you enjoy it.

  6. Hi, Recipe sounds great and easier than the one I usually follow.
    Have you made in advance in a large pyrex, frozen and used at a later date. (I will defrost the night before and heat the day of)
    Trying to save time for an upcoming party but I don’t want to compromise the taste or texture. Thanks

    1. Hi AnnMarie, Opinions vary on freeing unbaked strata. I think it’s safe, but I know you’re concerned about the texture (although it will likely be fine). If you do freeze it ahead, make sure you wrap it well, defrost it the night before in the fridge, bring it to room temperature for 1/2 hour the next day, then bake. An alternative is to prepare the strata 2 days ahead of serving and keep it well wrapped in the fridge if that helps.

      I will clarify these options in the recipe notes, so thanks for bringing it up. I hope this helps.

  7. 5 stars
    I love the idea of your breakfast strata! I’m vegan. Your recipe calls for 8-10 eggs. I’m wondering if I can do a similar thing using a vegan egg base (in my Vitamix, soft tofu, nutritional yeast, black salt, turmeric…) I can’t see why not but wondered if anyone has tried this. Works for vegan French toast casseroles ( minus the nutritional yeast!)

    I’m off to try your Montreal bagel recipe. I can’t believe the places I’ve lived in Canada and the bakeries/grocery stores with what they CALL “bagels”. Absolutely shameful!!! I’m a Montrealer who SHOULD have been making her own bagels for years already having moved from there….so today is the day. No more “bread with holes in the middle” from stores locally any longer! Haha! Thank you from one Kook to Another!

    1. Hi Mandy, I can’t speak to the vegan egg base for the strata, but if you try it, I (and I’m sure other readers) would love to hear how it worked out. As for the ‘real’ Montreal bagels, I hope you like them! They are very authentic except for the wood oven of course. Good luck!

  8. 5 stars
    Made 2 for a birthday brunch. One regular (sausage, spinach, onion) and another but with gluten free bread. Everyone loved it and those casserole pans were scraped clean!
    Highly recommend !!

    1. Yes no problem. Just give it a rough chop and sauté it with whatever other veggies your using. You will need about 1 to 1 1/2 pounds raw spinach or 15 cups for the equivalent of 10 ounces frozen. But exact measurements are not needed for the filling options.

    1. Hi Walter, I can’t speak to how they would taste, but the cooked hash browns should work fine in the strata. I would love to hear how it turns out!

  9. Hi! This looks delicious! Have you tried freezing it in individual portions for a quick breakfast? I wonder if it would still be good?

    1. Thanks Erika! I haven’t tried that, but it should work well. And it’s a great quick breakfast or lunch idea. Either cool, cut into portions and wrap well individually before freezing. Or cool, cut, flash freeze for 30-60 minutes on a baking sheet, then pile the individual portions into an airtight container or sealed freezer bag. Warm up in the microwave. Hope that helps.