Classic Potatoes au Gratin

1. 1

   Heat oven to 350F.

2. 2

   Melt butter in medium saucepan on medium heat.

3. 3

   Blend in flour, mustard and pepper; cook and stir 1 min.

4. 4

   Gradually add milk, stirring until well blended; cook 3 to 5 min.

5. 5

   until thickened, stirring constantly.

6. 6

   Add 1-1/2 cups cheese and onions; cook 2 to 3 min.

7. 7

   until cheese is melted, stirring frequently.

8. 8

   Layer potatoes and cheese sauce alternately in 2-qt.

9. 9

   casserole sprayed with cooking spray, ending with cheese sauce.

10. 10

    Bake 1-1/4 hours or until potatoes are tender.

11. 11

    Sprinkle with remaining cheese; bake 5 min.

12. 12

    or until melted.

* Per serving · 4 servings · Values may vary.

No additional tips available.