Onions Au Gratin

Total Time:Prep: 15 min. Bake: 25 min.

By Taste Of Home Editorial Team

Recipe by Christine Halandras, Meeker, Colorado

Tested by Taste of Home Test Kitchen

Updated on Oct. 22, 2022

Most everyone cooks with onions, but few think of serving them as a vegetable side dish. My family really loves this recipe.—Christine Halandras, Meeker, Colorado

TEST KITCHEN APPROVED

Onions Au Gratin

Yield:8 servings
Prep:15 min
Cook:25 min

Ingredients

  • 6 medium yellow onions
  • 1/4 cup butter, cubed
  • 2 tablespoons all-purpose flour
  • 1/2 cup beef broth
  • 1/2 cup heavy whipping cream
  • 1/4 teaspoon salt
  • 1/8 teaspoon pepper
  • 1/2 cup shredded Swiss cheese
  • 1/2 cup grated Parmesan cheese
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Directions

  1. Cut onions into 1/2-in. slices; saute in butter until tender. Place in a greased 8-in. square baking dish.
  2. In a small bowl, stir the flour, broth, cream, salt and pepper until smooth; pour over onions. Sprinkle with cheeses.
  3. Bake, uncovered, at 350° for 25-30 minutes or until cheese is golden brown and mixture is bubbly.
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