All Recipes

Potatoes au Gratin

Prep

15-30 mins

Total

1 HR

Servings

8 Servings

Discover your family's new favorite side dish with these Au Gratin Potatoes. Watch our video to learn how to make easy, cheesy Au Gratin Potatoes today!

Ingredients

  • 2-1/2

    lb

    baking potatoes (about 6)

  • 1/4

    cup

    butter

  • 1

    small

    onion, chopped

  • 1/4

    cup

    flour

  • 1

    tsp

    salt

  • 2-1/2

    cups

    milk

  • 1-3/4

    cups

    Shredded Sharp Cheddar Cheese, divided

  • 1/2

    tsp

    GREY POUPON Dijon Mustard

  • 1/4

    cup

    Grated Parmesan Cheese

Instructions

  1. Step 1

    Cook potatoes in boiling water 20 min. or just until tender; drain. Cover with cold water; cool.

  2. Step 2

    Meanwhile, melt butter in medium saucepan on medium heat. Add onions; cook and stir 2 min. Blend in flour and salt; cook 1 min. Gradually stir in milk; cook 5 min. or until thickened, stirring constantly. Add 1-1/4 cups cheddar; cook and stir 1 min. or until melted. Stir in mustard.

  3. Step 3

    Heat oven to 375°F. Peel potatoes; cut into 1/4-inch-thick slices. Layer alternately with cheese sauce in 2-qt. casserole sprayed with cooking spray, ending with sauce.

  4. Step 4

    Bake 25 to 30 min. or until heated through. Top with remaining cheeses; bake 5 min. or until melted.

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