First-Rate Mushroom Casserole Recipe

First-Rate Mushroom Casserole Recipe


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For the best breakfast casserole recipe contest. Very easy to make. Baked mushroom and onion with mayonnaise sauce. Top with mozzarella cheese.

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Plainfield IN

Time needed

10 min preparation + 15 min cooking

Serving Size / Yield

2 servings


  • 8 oz. mushroom
  • 1/2 onion
  • 1/2 C. mayonnaise
  • 1 egg
  • 1/2 C. mozzarella cheese, shredded

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Preheat the oven to 350 degrees F. Cut mushroom into pieces. Chop onion.
In a bowl, beat egg and add mayonnaise, onion, mushroom, and pepper. Mix well. Place in a baking dish. Sprinkle mozzarella cheese on top. Bake for 10 minutes.

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