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Classic Potatoes Au Gratin

  • Prep Time: 20 Minutes (1 Hour 40 Minutes)
  • Serving Size: 8
  • 1/4 cup (1/2 stick) Butter Or Margarine
  • 1/4 cup Flour
  • 1 teaspoon Salt
  • 1/2 teaspoon Dry Mustard
  • 1/4 teaspoon Pepper
  • 2-1/2 cups Milk
  • 1 package (8 ounces) KRAFT Shredded Cheddar Cheese, Divided
  • 2 tablespoons Chopped Onion
  • 6 cups Thinly Sliced Peeled Potatoes (about 6 To 8 Medium)
  • PREHEAT oven to 350°F. Melt butter in medium saucepan on medium heat. Blend in flour, salt, mustard and pepper. Gradually add milk, stirring until well blended; cook until thickened, stirring constantly.

    ADD 1-1/2 cups of the cheese and the onion; cook until cheese is melted, stirring frequently. Layer potatoes and cheese sauce alternately in 2-quart casserole dish, ending with a layer of the cheese sauce.

    BAKE 1 hour 15 minutes or until potatoes are tender. Sprinkle with the remaining cheese. Bake an additional 5 minutes or until cheese is melted.


    Size It Up

    Enjoy a serving of this classic side dish as part of a special-occasion meal.

    Great Substitute

    Prepare as directed, using KRAFT Shredded Swiss Cheese.