Menu
Carrots Au Gratin Carrots Au Gratin
Leeks au Gratin Leeks au Gratin
Cabbage Au Gratin Cabbage Au Gratin
Au Gratin Potatoes Au Gratin Potatoes
Cauliflower au Gratin Cauliflower au Gratin
Au Gratin Potatoes 'n' Leeks Au Gratin Potatoes 'n' Leeks
Eggplant Au Gratin Eggplant Au Gratin
Au Gratin Cabbage Au Gratin Cabbage
Artichokes Au Gratin Artichokes Au Gratin
Au Gratin Garlic Potatoes Au Gratin Garlic Potatoes
Onion Beef au Jus Onion Beef au Jus
Au Gratin Peas and Potatoes Au Gratin Peas and Potatoes
Mustard Potatoes Au Gratin Mustard Potatoes Au Gratin
Simple au Gratin Potatoes Simple au Gratin Potatoes
Au Gratin Potato Casserole Au Gratin Potato Casserole
Scalloped Potatoes au Gratin Scalloped Potatoes au Gratin
Au Gratin Taters N Chops Au Gratin Taters N Chops
Macaroni Au Gratin Macaroni Au Gratin
Au Gratin Red Potatoes Au Gratin Red Potatoes
Au Gratin Potatoes with Green Chiles Au Gratin Potatoes with Green Chiles

Onions Au Gratin

6 reviews
Test Kitchen Approved
Total Time

Prep: 15 min. Bake: 25 min.

Makes

8 servings

Updated: 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
Onions Au Gratin
Next Recipe

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

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.

Nutrition Facts

1 cup: 203 calories, 15g fat (9g saturated fat), 46mg cholesterol, 303mg sodium, 13g carbohydrate (8g sugars, 2g fiber), 6g protein.