Croissant Breakfast Casserole

Total Time
Prep 10 mins
Cook 35 mins

Adapted many years ago from a recipe in the Calgary Herald newspaper. It is a no fail recipe! Easy for the beginner cook and looks very elegant. Can be doubled and tripled with no problem! Cook time does not take into consideration overnight sitting time, so plan ahead!!

Ingredients Nutrition


  1. Split croissants in half and place bottoms cut side up in one layer in a rectangular casserole.
  2. Melt butter in a fry pan.
  3. Saute mushrooms and green onion until tender and liquid has evaporated.
  4. Set aside.
  5. Beat together eggs and milk.
  6. Pour half over croissants, layer mushroom mixture and cheeses on top, then pour over remaining liquid.
  7. Position croissant tops over the bottoms, cut side down.
  8. Let stand over night in the refrigerator.
  9. Bake at 350*F for 25 to 30 minutes or until set.
  10. Cover with foil if browns too quickly.
Most Helpful

5 5

This is fabulous! I served it at my Christmas breakfast and everyone loved it. I doubled the recipe, tripled the eggs (12), and added ham. Also used cheddar, mozzarella cheese and parmesan cheese. Baked about an hour. It was excellent. Definitely will make this again.

5 5

Yummo, Yummo, Yummo and Oh so Good as they would say. This is the best breakfast casserole that I have so far made. It is wonderful plain and also dressed up. I have made this with crab meat, shrimp, just to name a few. My husband who is a fussy person went for seconds and that is saying much. Thank you for such a wonderful and delicious recipe.

5 5

I've made this several times. It is a hit each time. I generally add some ham to mine.

It is easy and quick. Putting together the night before helps with the next morning. This recipe is now a family standard!

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