On-the-Fly Breakfast Casserole with Mushrooms

Andy Anderson !


Had some good friends stop over Sunday morning… Did I say it was unexpected?

Went into the walk-in and found some eggs, Cremini mushrooms, milk, and several different varieties of cheese… I think it’s egg casserole time.

So, you ready… Let’s get into the kitchen.


★★★★★ 1 vote

4 - 6
10 Min
40 Min



  • 1 Tbsp
    olive oil
  • 1 Tbsp
    sweet butter, unsalted
  • 10 oz
    cremini mushrooms, thickly sliced
  • 8 large
    farm fresh eggs
  • 1 1/2 c
    fresh whole milk
  • 1 c
    cheddar cheese, freshly shredded
  • 1 c
    colby cheese, freshly shredded
  • 1 pinch
    cayenne pepper, or to taste
  • 1 pinch
    paprika, or to taste
  • ·
    salt, kosher variety, to taste
  • ·
    black pepper, freshly ground, to taste
  • ·
    dill, freshly chopped, for garnish

How to Make On-the-Fly Breakfast Casserole with Mushrooms


  2. Chef’s Note: I don’t have my usual amount of photos for this one, but I think you have enough to get the idea.
  3. Gather your ingredients.
  4. Place a rack in the middle positions, and preheat the oven to 350f (175c).
  5. Shred the two cheeses, and reserve.
  6. Clean and stem the mushrooms, then thickly slice.
  7. Add the butter and olive oil to a sauté pan over medium heat.
  8. When the foaming subsides, add the mushrooms.
  9. Cook until they have lost most of their moisture, and are golden brown, about 15 to 18 minutes. Allow to cool, and reserve.
  10. Add the eggs to a large bowl and whisk together.
  11. Add the milk, salt, pepper, cayenne, and paprika, and whisk to combine.
  12. Add the cheese, and then stir together.
  13. Finally add the mushrooms and stir to combine.
  14. Pour the mixture into a baking dish, cover with foil and place in the preheated oven.
  15. Allow to bake, covered for 20 minutes.
  16. Remove the cover, and continue to bake for an additional 20 minutes.
  17. Remove from the oven and let rest for 10 minutes.
  19. Sprinkle some freshly chopped dill on top, and severe with some hash browns, and possibly crispy bacon. Enjoy.
  20. Keep the faith, and keep cooking.

Printable Recipe Card

About On-the-Fly Breakfast Casserole with Mushrooms

Course/Dish: Eggs
Main Ingredient: Eggs
Regional Style: American

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