Two Potato Gratin

10 ingredients
7 steps

Ingredients

  • 1 tablespoon butter
  • 1 cup whole milk or 1 cup 2% low-fat milk
  • 3/4 teaspoon salt
  • 1/8 teaspoon fresh ground pepper
  • 1 pinch dried ancho chile powder
  • 1 pinch of grated nutmeg
  • 1 lb yukon gold potato, peeled, and sliced into 1/2 inch thick rounds
  • 1 lb sweet potato, peeled and sliced into 1/2 inch thick rounds
  • 3 tablespoons whole grain mustard
  • 1 cup shredded gruyere cheese

Directions

  1. 1
    Preheat oven to 400 degrees. Butter a shallow 2-quart gratin pan or ceramic baking dish.
  2. 2
    In a large saucepan, combine milk, salt, pepper, chili powder, and nutmeg.
  3. 3
    Heat to a boil over medium high heat.
  4. 4
    Add potatoes and return to boil, simmering a few minutes, until mixture thickens slightly.
  5. 5
    Remove pan from heat; stir in mustard.
  6. 6
    With a slotted spoon, transfer half the potatoes to gratin dish; place in an even layer, Sprinkle with 1/2 cup of Gruyere.
  7. 7
    Top with remaining potatoes; pour milk mixture over potatoes and sprinkle with remaining 1/2 cup Gruyere. Bake 40 minutes until potatoes are tender and the top is golden.

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