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Mushroom and Sweet Onion Casserole

By Diana Rattray, About.com

Recipe for a sweet onion and mushroom casserole. Scroll down to see more onion recipes.

Cook Time: 40 minutes

Ingredients:

  • 1/2 cup melted butter, divided
  • 1 tablespoon fresh lemon juice
  • 16 ounces fresh sliced mushrooms
  • 4 cups sliced sweet onion rings
  • salt and pepper, to taste
  • 3 cups diced tomatoes, drained if canned
  • 2 cups soft bread crumbs, divided

Preparation:

In a large skillet in 3 tablespoons of melted butter and the lemon juice, saute the mushrooms; set aside. Add 2 tablespoons of melted butter to the skillet; saute onions until transparent. Place onions in a 1 1/2-quart baking dish; top with mushrooms. Sprinkle with salt and pepper. Combine tomatoes and half the bread crumbs; season with salt and pepper. If tomatoes are fresh, simmer for about 10 minutes. If canned tomatoes are used, simmer for a minute. Pour tomato mixture over mushrooms. Toss the remaining crumbs with the remaining melted butter. Sprinkle crumbs over tomatoes. Bake at 350 degrees for 30 minutes.
Serves 6.

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