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Au Gratin Potatoes ‘n’ Leeks

Total Time

Prep: 45 min. Bake: 55 min.

Makes

12 servings

I love making casseroles during the holidays. It made me a fan of Gruyere cheese for au Gratin dishes. —Rosalie Hughes, Boise, Idaho
Au Gratin Potatoes 'n' Leeks Recipe photo by Taste of Home

Ingredients

  • 8 cups sliced peeled potatoes (1/4-inch slices)
  • 3 medium leeks (white portion only), cut into 1/2-inch slices
  • 2 tablespoons butter
  • 3 tablespoons all-purpose flour
  • 1/2 teaspoon salt
  • 1/8 teaspoon pepper
  • 1-1/3 cups 2% milk
  • 4 ounces Gruyere or Swiss cheese, shredded
  • 1/8 teaspoon ground nutmeg
  • CRUMB TOPPING:
  • 1/3 cup dry bread crumbs
  • 2 tablespoons butter, melted
  • 1/4 cup shredded cheddar cheese

Directions

  1. Place potatoes in a Dutch oven and cover with water. Bring to a boil. Add leeks; return to a boil. Cover and cook for 5 minutes. Drain and pat dry. Place in a greased 13-in. x 9-in. baking dish.
  2. In a large saucepan, melt butter. Stir in the flour, salt and pepper until smooth; gradually add milk. Bring to a boil; cook and stir for 2 minutes or until thickened. Stir in cheese and nutmeg until cheese is melted. Pour over potato mixture. Toss bread crumbs and butter; sprinkle over the top.
  3. Cover and bake at 325° for 40 minutes. Uncover; sprinkle with cheddar cheese. Bake 15-20 minutes longer or until potatoes are tender.

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