Best-Ever Breakfast Casserole

READY IN: 45mins
Recipe by Irish Rose

My sister loved to make breakfast casseroles and they were always so good. This is one she made for us that was incredibly delicious. It can also be made two days in advance but CANNOT be frozen.

Top Review by ChristinaCarlsen

This was delicious, since we were feeding more people, I cooked up some potato cubes and placed this casserole over the top of the potato bed. It was delicious and stretched the meal! Great sauce!

Ingredients Nutrition


  1. Cheese sauce.
  2. Melt butter over medium heat. Add flour and mix well. Allow to bubble for 1-2 minutes. Remove from heat and stir in milk. Return to heat and cook until thickened. Add cheese and salt and pepper. Stir until cheese melts.
  3. Set aside and start on casserole.
  4. Saute onions in butter, add eggs and scramble until soft. Do not overcook. Add mushrooms, salt and pepper. Fold in prepared cheese sauce and crumbled bacon. Spoon into lightly greased 9x13 baking dish.
  5. Cover with plastic wrap and chill until ready to bake.
  6. Bake at 350 degrees for 30 minutes. Serves 8.

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