Three Potato Gratin - cooking recipe

Ingredients

1 Tbsp. butter
2 1/2 c. heavy cream
1/4 c. Dijon mustard
1 1/2 tsp. cornstarch
1 tsp. salt
1/2 tsp. pepper
1 1/2 lb. each, baking potatoes, sweet potatoes and red potatoes, sliced thinly
1 tsp. fresh thyme, crumbled

Preparation

Preheat oven to 325\u00b0.
Butter a 3-quart shallow baking dish In bowl, combine cream with mustard, cornstarch, salt and pepper. Toss into sliced potatoes.
Pour into dish and cover.
Bake 1 hour.
Uncover and bake 30 more minutes.
Sprinkle with thyme.