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Egg, Ham, and Croissant Breakfast Casserole Recipe for Christmas Morning

Dec 7, 2018 ·

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This Breakfast Casserole recipe is a combination of honey baked ham, flaky croissants, and creamy eggs that have been whisked to perfection with whole milk was exactly what Santa wanted us to be eating as we watched our nearest and dearest tear into colorfully wrapped gifts.

Croissant Breakfast Casserole Recipe

I almost wish I had never made this Breakfast Casserole recipe. As breakfast casseroles go, I usually stick to the lighter sort. Many times they're crustless, often times including things like kale and butternut squash, and almost never do they contain 2 cups of whole milk.

But it's Christmas and when I found a similar recipe strumming through the pages of Southern Living, I couldn't help but think that this is worth making!

How To Make This Breakfast Casserole Recipe - Step By Step

  • Add 1 tablespoon oil to a large skillet over medium heat.
  • Add ham and cook for 2-4 minutes , stirring once or twice until slightly browned
  • Remove ham from the skillet and add to a medium size mixing bowl.
  • Add remaining oil to the skillet and stir in onions, cooking on medium low heat for about 10-12 minutes until very soft.
  • Add spinach for 1-2 minutes then transfer onion-spinach mixture to the mixing bowl with ham.
  • In a separate bowl, whisk together eggs, milk, nutmeg, salt, and pepper.
  • In a lightly greased 11 x 7" pan, arrange chopped croissants, all of the pieces should be touching each other and perhaps even overlapping slightly.
  • Top the croissants with the onion / ham / spinach mixture, spreading it around evenly.
  • Pour the egg mixture on top until the liquid settles evenly around the pan, possibly nudging the croissants in certain places so that the egg mixture can get through.
  • Top with cheese.
  • Cover casserole with aluminum foil and chill for at least 2 hours, but up to overnight.
  • When ready to bake, preheat oven to 375 degrees.
  • Bake for 45 minutes while covered then remove the foil for an additional 10 minutes to brown the tops. (I let them "brown" for about 25 minutes-- too long!)

plate of Croissant Breakfast Casserole Recipe

dish with Croissant Breakfast Casserole Recipe

An Easy Breakfast Casserole Recipe

It is so easy to throw all of the ingredients together that you’ll have it whipped up and prepped for the refrigerator in no time. You just need to cook up the ham and onion, whisk the egg mixure, assemble in the dish and bake! There's not a tonne of ingredients either, so this one is really simple!

Can I Make This Breakfast Casserole Ahead Of Time?

To make ahead – prepare the recipe without baking, wrap tightly with plastic wrap and store in the refrigerator for up to 3 days. Then, to bake, remove the plastic wrap and bake as directed.

Can I Freeze This Casserole?

If you would like to freeze this casserole,  prepare the recipe in a freezer-safe dish as directed without adding the cheese or baking. Wrap well with plastic wrap and then with foil. Freeze for up to 3 months. Remove from the freezer and allow to thaw in the refrigerator overnight. Top with the cheese and bake as directed.

hand with fork eating casserole

Top Tips For This Breakfast Casserole Recipe

  • Use quality croissants – for this recipe you’ll want to use the flaky, buttery croissants from the bakery section of the grocery store… not the kind that come in a can with a little dough boy on the label.  Nothing against that kind, but you want those fabulous little nooks and crannies of the real croissants, as they soak up the amazing sauce.
  • Make sure to grease your oven dish, lightly.
  • When pouring the egg mixture on top, nudge the croissants in certain places so that the egg mixture can get through.
  • Once baked, allow to cool, wrap well with plastic wrap or foil, and store in the refrigerator for up to 3 days. Reheat and serve.

close up of caserole

Croissant Breakfast Casserole Recipe on table

Check Out These Other Delicious Breakfast Ideas

  • 10 Weekend Breakfast Recipes Worth the Effort
  • Sweet Potato Hash Brown Breakfast Stacks
  • Mother's Day Breakfast Pizza Recipe
  • Easter Leftover Honey Ham Breakfast Tacos with Chipotle Crema

Have you tried this breakfast casserole recipe? Feel free to leave a star rating and I'd love to hear from you in the comments below!

Egg, Ham, and Croissant Breakfast Casserole with Spinach and Havarti

Jen Pinkston
Basically the best breakfast casserole you will ever eat.
5 from 2 votes
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Cook Time 1 hour hr 10 minutes mins
refrigerate 2 hours hrs
Total Time 1 hour hr 20 minutes mins
Course Breakfast
Cuisine American
Servings 8 servings
Calories 470 kcal

Ingredients
  

  • ¾ lb honey baked ham from the deli sliced thick (on a scale of 1-10, I sliced it a 5), coarsely chopped
  • 2 Tbsp. olive oil divided
  • 1 sweet yellow onion chopped
  • 2 cups roughly chopped baby spinach
  • 7 large eggs
  • 2 c. whole milk
  • 2 tsp. nutmeg
  • 1 tsp. kosher salt
  • 1 tsp. black pepper
  • ¾ c. grated Havarti cheese mozzarella would also work
  • 5 large croissants chopped into about 5 pieces each

Instructions
 

  • Add 1 tablespoon oil to a large skillet over medium heat.
  • Add ham and cook for 2-4 minutes , stirring once or twice until slightly browned
  • Remove ham from the skillet and add to a medium size mixing bowl.
  • Add remaining oil to the skillet and stir in onions, cooking on medium low heat for about 10-12 minutes until very soft.
  • Add spinach for 1-2 minutes then transfer onion-spinach mixture to the mixing bowl with ham.
  • In a separate bowl, whisk together eggs, milk, nutmeg, salt, and pepper.
  • In a lightly greased 11 x 7" pan, arrange chopped croissants, all of the pieces should be touching each other and perhaps even overlapping slightly.
  • Top the croissants with the onion / ham / spinach mixture, spreading it around evenly.
  • Pour the egg mixture on top until the liquid settles evenly around the pan, possibly nudging the croissants in certain places so that the egg mixture can get through.
  • Top with cheese.
  • Cover casserole with aluminum foil and chill for at least 2 hours, but up to overnight.
  • When ready to bake, preheat oven to 375 degrees.
  • Bake for 45 minutes while covered then remove the foil for an additional 10 minutes to brown the tops. (I let them "brown" for about 25 minutes-- too long!)

Nutrition

Nutrition Facts
Egg, Ham, and Croissant Breakfast Casserole with Spinach and Havarti
Amount per Serving
Calories
470
% Daily Value*
Fat
 
30
g
46
%
Saturated Fat
 
14
g
88
%
Cholesterol
 
219
mg
73
%
Sodium
 
1167
mg
51
%
Potassium
 
409
mg
12
%
Carbohydrates
 
24
g
8
%
Fiber
 
2
g
8
%
Sugar
 
10
g
11
%
Protein
 
25
g
50
%
Vitamin A
 
1448
IU
29
%
Vitamin C
 
4
mg
5
%
Calcium
 
260
mg
26
%
Iron
 
2
mg
11
%
* Percent Daily Values are based on a 2000 calorie diet.
Keyword breakfast casserole, cheese casserole, croissant casserole, ham casserole
Tried this recipe?Let us know how it was!

Photography for Croissant Breakfast Casserole Recipe by Katie Jameson

« Christmas in Round Top and Holiday Bucket Lists
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Reader Interactions

Comments

  1. Wynn says

    December 12, 2018 at 11:59 am

    YASSSS! Now I know what I'm making Christmas morning!5 stars

    • Jen Pinkston says

      December 12, 2018 at 12:00 pm

      Do it girl!

  2. Nicole says

    December 12, 2018 at 11:58 am

    Oh I love this idea! I feel like most croissant casserole recipes are all sweet / french toast. Love this Savory one!5 stars

  3. Jennifer says

    December 07, 2018 at 6:52 am

    This is making me hungry!! I want it now!!

    Jennifer
    Effortlessly Sophisticated

  4. Jessica Camerata says

    December 07, 2018 at 6:21 am

    This looks so good even with a little burnt tops!

    xo Jessica
    My Style Vita

    • Jen Pinkston says

      December 12, 2018 at 11:55 am

      Haha! I know. I contemplated not posting it because of the burnt tops, but it's seriously so good! We can't all be food stylists all the time I guess 😉

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