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Potato Gratin Recipe for Progressive Eats from Miss in the Kitchen
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5 from 3 votes

Potato Gratin

Prep Time20 minutes
Cook Time1 hour 15 minutes
Total Time1 hour 35 minutes
Servings: 5 -6
Author: Milisa

Ingredients

  • 6-7 medium potatoes washed, peeled and thinly sliced
  • 3 tablespoons butter
  • 1/2 large onion diced
  • 1 teaspoon minced garlic
  • 1 teaspoon kosher salt
  • 3 tablespoons all purpose flour
  • 1 cup milk
  • 1/2 cup heavy cream
  • 1/2 cup broth
  • 1 cup grated Swiss cheese
  • 1 cup grated Dubliner cheese or white cheddar
  • fresh thyme for garnish

Instructions

  • Preheat oven to 375 degrees.
  • Grease a baking dish and set aside. (I used a deep pie dish)
  • Add butter to a saucepan and add onions and garlic. Place over medium heat and cook, stirring often until onions are translucent. Add flour and salt and whisk together, cooking for about 2 minutes. Add milk, cream and broth and continue whisking until sauce thickens. Remove from heat.
  • Add a layer of potato slices to cover bottom of dish. Pour about 1/3 of sauce over potatoes and spread evenly.
  • Mix the shredded cheese together. Sprinkle about 1/3 of cheese over sauce. Continue layering ending with cheese.
  • Bake for 1 hour 15 minutes to 1 hour 25 minutes or until potatoes are cooked through. Garnish with fresh thyme.
  • Allow potato gratin to set 15 minutes before serving.