Easy Dijon Scalloped Potatoes

By lewolfe50

Ingredients

• 1/3 cup chopped onion
• 2 Tbsp. margarine or butter
• 2 Tbsp. flour
• 1-1/2 cups milk
• 1/4 cup GREY POUPON Dijon Mustard
• 4 medium baking potatoes (about 1-1/2 lb.), peeled, thinly sliced
• 1/3 cup KRAFT Shredded Swiss Cheese

Preparation

Step 1

PREHEAT oven to 375°F. Cook and stir onion in margarine in medium saucepan on medium heat until tender. Add flour; cook and stir 2 min. Gradually add milk, stirring until well blended; cook until mixture thickens and begins to boil, stirring frequently. Remove from heat. Stir in mustard.
LAYER potatoes and mustard sauce alternately in greased 2-qt. baking dish; cover.
BAKE 1 hour. Uncover; sprinkle with cheese. Bake an additional 10 to 15 min. or until cheese is melted and potatoes are tender. Let stand 5 min. before serving.