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Savory Croissant Breakfast Casserole

This savory croissant breakfast casserole is perfect for potlucks, holidays, or if you have guests!
Course Breakfast
Cuisine American
Keyword Savory Croissant Breakfast Casserole
Prep Time 20 minutes
Cook Time 55 minutes
Servings 8 people
Author Two Pink Peonies


  • 9 x 13 inch casserole dish


  • 6 large croissants cut in half
  • 1 cup fresh mushrooms sliced
  • 1 bunch green onions chopped
  • 6 large eggs beaten
  • 2 tbsp heavy whipping cream or whole milk
  • 2 tbsp butter
  • ½ cup chopped turkey or ham sandwich meat
  • 4 strips bacon fried, cooled then and chopped
  • ½ cup sharp cheddar cheese
  • ¼ cup Parmesan cheese
  • 6 slices Swiss cheese


  • Slice your croissants in half.
  • Next, grease a casserole dish and placing the croissants in it.
  • Toast the croissants at 350 degrees for about five minutes or until just slightly browned.
  • Cover the croissants with Swiss cheese (be careful the pan may be hot from toasting).
  • Heat the butter in a large skillet and combine the mushrooms, sandwich meat, and green onions. Saute on medium for about five minutes and then set aside to cool slightly.
  • Cover the croissants with the mixture. (Again, be careful the pan may still be hot from toasting your croissants).
  • Next, pour the egg and heavy cream mixture over the casserole and then add the remaining cheese on top.
  • At this point, the casserole can be kept in the refrigerator overnight for a no fuss fix the next morning or you can go ahead and bake the casserole if you're ready.
  • The casserole needs to covered with foil and cooked at 350 degrees for about 45 minutes then uncovered for 5 to 10 additional minutes or until the cheese is completely melted.