Croissant Strata

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5 from 93 votes

A strata is a great casserole for a homemade brunch. This breakfast strata is made with croissants instead of standard bread, caramelized onions, bacon and cheese. YUM!

Today, we’re indulging in the ultimate morning delight: a decadent breakfast strata made with buttery croissants, caramelized onions, crispy bacon, and melty cheese.

Imagine the aroma of caramelized onions perfuming your kitchen, mingling with the savory scent of sizzling bacon. Picture golden croissants soaked in a rich egg custard, perfectly balanced by the ooey-gooey goodness of melted cheese. This breakfast strata is a symphony of flavors, a harmony of textures, and a celebration of all things delicious.

Whether you’re hosting a brunch, treating your family to a special morning feast, or simply indulging in a self-care weekend breakfast, this recipe will awaken your taste buds and bring joy to your table.

For a less indulgent breakfast option, try this Egg White Frittata!

Why You’ll Love This Strata Recipe

  • Croissants are so much better than standard bread!
  • It’s cheesy.
  • It’s sweet, salt and smoky from the caramelized onions and bacon.
  • Make it ahead and reheat it when you’re ready to serve.
  • It feeds a crew, with lots of leftovers.

Strata Recipe Ingredients

  • Croissants – instead of standard bread, we’re using buttery croissants as the base for our strata.
  • Eggs – eggs create a strata!
  • Whole milk – whole milk helps create the eggy custard base.
  • Grated Emmenthaler or Jarlsberg cheese – Emmenthaler or Jarlsberg are Swiss cheeses that are great melting cheeses.
  • Grated parmesan cheese – parmesan is a flavorful, nutty cheese that adds flavor.
  • Bacon – bacon adds smoky, meatiness.
  • Yellow onions – yellow onions make the best caramelized onions!
  • Fresh chives – fresh chives add a pop of green.
  • Butter – butter helps us caramelize onions.
  • Balsamic vinegar – balsamic vinegar adds a subtle tang that cuts the richness of the other ingredients.

How to Make Strata

Full instructions in the recipe card; this is just an outline!

  1. Caramelize onions.

    Cook onions in butter over medium-high heat until golden. Add balsamic and cook for 2 more minutes. Remove from pot and let cool.

  2. Toast croissants.

    Grease a 9×13 baking pan. Spread torn croissants and bake for 10-15 minutes until crispy.

  3. Cook bacon.

    Fry bacon until crispy, then remove and let cool in a separate bowl.

  4. Mix.

    Whisk eggs, milk, salt, and pepper. Add half of the cheese and pour mixture over croissants.

  5. Assemble.

    Add bacon and caramelized onions evenly throughout the pan. Sprinkle remaining cheese on top.

  6. Chill.

    Refrigerate strata for at least 30 minutes or overnight.

  7. Bake.

    Bake at 350 degrees for 50-55 minutes until set and golden brown on top.

  8. Serve.

    Let it rest for 10-15 minutes before slicing. Serve warm or at room temperature.

Strata Recipe Substitutions and Additions

Instead of bacon and caramelized onion, here are some other flavor ideas for this croissant breakfast strata:

  • Veggie: like spinach, pepper, mushroom and cherry tomato
  • Mediterranean: with kalamata olives, sun-dried tomatoes, and herbs
  • Ham or sausage
  • Meatless (just remove the bacon)
  • Try different cheeses like gruyere, mozzarella, fontina, or cheddar
  • Apple: add sliced apples and a drizzle of maple syrup

What to Serve With Strata

When serving a breakfast strata, consider these awesome side dish options:

  1. Fresh fruit salad
  2. Breakfast Potatoes
  3. A simple salad
  4. Breakfast meats (sausage, ham)
  5. Yogurt and granola parfait
  6. Toast, bread or Popovers
  7. Coffee, tea or juice
  8. Zucchini Muffins, Lemon Poppy Seed Muffins, or Banana Bread Muffins

Frequently Asked Questions (FAQs)

What is a strata?

A strata is a baked breakfast casserole dish made with layers of bread, eggs, cheese, and other ingredients, resulting in a savory and satisfying meal often enjoyed for breakfast or brunch.

What’s the difference between a frittata and a strata?

A frittata is an open-faced Italian omelette, while a strata is a baked casserole dish consisting of layered bread, eggs, and other ingredients.

How long does this breakfast strata last?

Enjoy the strata within 5 days.

Can you make this strata ahead?

Yes, absolutely! This strata is an excellent made ahead brunch.

How do you reheat strata?

Reheat strata at 350 degrees, covered, until hot. The amount of time depends on how much strata you are reheating. A full pan can take about 30 minutes vs a slice can take 5 minutes.

Can you freeze strata?

While it can be frozen, the texture may be somewhat different when reheated. Thaw the strata overnight in the refrigerator before reheating.

More Breakfast Recipes You’ll Love!

Croissant Strata

A strata is a great casserole for a homemade brunch. This breakfast strata is made with croissants instead of standard bread, caramelized onions, bacon and cheese. YUM!
5 from 93 votes
Prep Time: 20 minutes
Cook Time: 1 hour 25 minutes
Refrigeration Time: 30 minutes
Total Time: 2 hours 15 minutes
Course: Breakfast, Lunch
Cuisine: American
Keyword: fall, winter
Servings: 12 servings
Calories: 530kcal
Author: Tastefully Grace


  • 9×13" pan


  • 6 croissants torn into quarters
  • 8 large eggs
  • 3 medium yellow onions cut into strips
  • 3 cups whole milk
  • 3 cups grated Emmenthaler or Jarlsberg cheese
  • 1 cup grated parmesan cheese
  • 1 pound bacon cut into small pieces
  • 3 tablespoons butter
  • ½ tablespoons balsamic vinegar
  • 1 small handful chives
  • Salt and pepper to taste


  • Place butter and onions in a pot. Let onions caramelize, covered, for about 15 minutes over medium-high heat, turning often. When onions turn golden, add balsamic and stir. Let caramelize for an additional 2 minutes. Use a slotted spoon to remove onions from pot and let cool.
  • Grease a 9×13" baking pan. Spread out torn croissants in pan, and bake for 10-15 minutes until croissants are nicely toasted and crispy.
  • While croissants are toasting, cook bacon in a pot over medium-high heat until crispy, about 10-15 minutes. Remove bacon from pot with a slotted spoon and let cool in a separate bowl.
  • Whisk together eggs, milk, salt and pepper. Add half of the cheese. Stir. Pour mixture evenly over croissants.
  • Add bacon and caramelized onions evenly throughout pan. Evenly sprinkle the remaining cheese on top of the strata.
  • Refrigerate strata for at least 30 minutes, or even overnight. Preheat oven to 350℉.
  • Snip chives over the top of the strata before baking for 50-55 minutes, until egg mixture is set in the middle and the top is deep golden brown.
  • Wait 10-15 minutes before slicing. Delicious served warm or room temp!



  • Keeps well for up to 5 days in the fridge.


Serving: 1slice | Calories: 530kcal | Carbohydrates: 21g | Protein: 23g | Fat: 39g | Saturated Fat: 18g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 13g | Trans Fat: 0.2g | Cholesterol: 200mg | Sodium: 644mg | Potassium: 317mg | Fiber: 1g | Sugar: 8g | Vitamin A: 867IU | Vitamin C: 2mg | Calcium: 425mg | Iron: 1mg
Tried this recipe?Let us know how it was!
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  1. Ingrid Olson
    April 16, 2024 / 12:07 pm

    5 stars
    I made this today for my husband’s work potluck and, since we live in the Midwest, knew there would be tons of other breakfast casseroles. This was an absolute hit with everyone and it smelled absolutely divine while it was baking. Will definitely make again! Not a crumb left.

    • April 16, 2024 / 12:47 pm

      Hi Ingrid,

      This is awesome! Thanks so much for sharing your experience. Please do let me know if you try any other recipes!


  2. Celine
    March 22, 2024 / 3:55 pm

    Are the croissants supposed to be raw or cooked before hand? Put raw dough with onions doesn’t seem right but wanted to check.

    • Anonymous
      March 22, 2024 / 3:56 pm

      Never mind re read it, apologies!

  3. Kim
    January 21, 2024 / 12:53 am

    5 stars
    So good! Just used what I had on hand that was similar such as red onion instead of yellow, shredded marble and Boursin Herb and Garlic cheeses instead of the stronger ones, and added chopped spinach and sun-dried tomatoes.
    This is an excellent base recipe and perfect for making adaptations according to taste.
    I’ve never pre-toasted the croissants before and that was a great idea.

    • January 21, 2024 / 11:41 am

      Hi Kim,

      I’m so thrilled to hear you love the Strata! Love the additions.


  4. Virginia
    December 30, 2023 / 12:47 pm

    What do you serve with this strata ?

    • December 30, 2023 / 12:50 pm

      Hi Virginia,

      I have a full list of ideas in my blog post above under “What to Serve With Strata” that should help! Please let me know if those aren’t helpful and I can brainstorm with you.

      Happy New Year!

      • Virginia
        December 30, 2023 / 7:09 pm

        Thanks for your help , hope try the strata really soon.

  5. Don Parton
    December 28, 2023 / 11:44 am

    5 stars
    Fantastic. Thanks for sharing!

  6. Tina Franklin
    December 28, 2023 / 11:44 am

    5 stars
    One of the best dishes our whole family has ever had!

  7. Mindy D
    December 27, 2023 / 8:43 am

    5 stars
    This was fantastic and a complete hit for Christmas morning. I added sautéed mushrooms. Everyone loved it!!

    • December 28, 2023 / 11:42 am

      Hi Mindy,

      So happy it turned out great! Thanks for letting me know. Happy New Year!


  8. December 25, 2023 / 5:23 pm

    4 stars
    Not bad, but not special. Too many onions. Everyone in my family thought it was just OK.

    • December 26, 2023 / 10:30 am

      Hi T.L.,

      I’m so sorry the strata was just okay! I wish I could help make it 5 stars for you and your family. Please let me know if there’s any way I can help. I hope you had a Merry Christmas!


  9. TWYLA
    November 21, 2023 / 4:26 pm

    Is the bacon cooked or not before adding it to the casserole?

    • November 21, 2023 / 4:42 pm

      Hi There,

      Yes! The bacon is cooked. Refer to step #3 in the recipe card: While croissants are toasting, cook bacon in a pot over medium-high heat until crispy, about 10-15 minutes. Remove bacon from pot with a slotted spoon and let cool in a separate bowl. I hope this helps!


  10. November 8, 2023 / 8:52 pm

    I made this recipe for my Bible study breakfast this morning and it was a hit. I had several requests for the recipe and people were so surprised that I used croissants for the base. I don’t know that I could ever go back to using regular sourdough bread, or any other kind of white bread. The aromas coming from this dish were amazing. Thank you for posting this delicious recipe. I’ll be making this again & again.

    • November 9, 2023 / 9:21 am

      Hi Kirsten,

      This is so amazing to hear! Thank you so much for your kind note. I really appreciate you letting me know!


  11. Audrey O
    October 21, 2023 / 4:55 pm

    5 stars
    We were all a bit Leary of this, as we’ve never had a savory casserole like this before, but my brave don wanted to try it, so we made it. We couldn’t find the kind of cheese stayed here so we subbed with Swiss.
    It was absolutely delicious and even my picky 9 year old who claims to not like onions asked for seconds both days we had it. Will definitely make it again!

    • October 22, 2023 / 6:29 pm

      Hi Audrey,

      Woohoo! So glad this was a big success! Thanks for letting me know 🙂


  12. Jan
    June 9, 2023 / 5:16 pm

    Can this be made ahead and then freeze it? If so bake it first? And on the reheat, temp and length of time?

    Thank you!

    • June 9, 2023 / 6:32 pm

      Hi Jan,

      While it can be frozen, the texture may be somewhat different when reheated. Thaw the strata overnight in the refrigerator. Reheat the strata in the oven at 350 until heated through (time depends on amount reheated). This will help to restore some of the texture and crispness.

      I hope this helps!

  13. Kim
    January 10, 2023 / 6:52 pm

    How many servings does this strata provide?

    • January 10, 2023 / 6:57 pm

      Hi! About 12 slices depending on how big you cut them!


  14. Karen
    December 23, 2022 / 12:12 pm

    Can I use Swiss cheese instead

    • December 23, 2022 / 12:15 pm

      Yes! Emmenthaler is actually the original swiss cheese.


      • Anonymous
        December 23, 2022 / 1:16 pm

        Thanks for the quick reply! Merry Christmas!

4.99 from 93 votes (86 ratings without comment)

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