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Mustard Potatoes Au Gratin

 Mustard Potatoes Au Gratin
These rich and creamy potatoes taste great with a variety of meats. —Tangee Thaler, Silver Lake, Ohio
12 ServingsPrep: 15 min. Bake: 55 min.


  • 1/3 cup finely chopped green onions
  • 3 tablespoons butter, divided
  • 2 cups heavy whipping cream
  • 1/2 cup Dijon mustard
  • 1 cup (4 ounces) shredded Swiss or Gruyere cheese, divided
  • 8 medium potatoes, peeled and thinly sliced


  • In a small saucepan, cook onions in 1 tablespoon butter for 2 minutes
  • or until tender. Stir in the cream, mustard and remaining butter.
  • Bring to a boil. Reduce hear; simmer, uncovered, for 5 minutes.
  • Reduce heat to low; stir in half of the cheese until melted. Remove
  • from the heat. In a greased shallow 2-1/2-qt. baking dish, layer a
  • third of the potatoes; top with a third of the sauce. Repeat layers
  • twice; sprinkle with remaining cheese.
  • Bake, uncovered, at 400° for 30 minutes. Cover and bake 25-30
  • minutes longer or until potatoes are tender. Let stand for 5 minutes
  • before serving.
  • Yield: 12 servings.