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Potato and Cheese Gratin

Potato and Cheese Gratin

With melted cheese and potatoes, your family will always welcome this simple dish at the dinner table.


  • 2 tbsp butter
  • 2 tbsp flour
  • 3 cups whole milk
  • 1 tsp salt
  • 1/4 tsp pepper
  • 1/2 tsp garlic powder
  • 1/4 tsp nutmeg
  • 1/4 tsp dried thyme
  • 2 cups (16-ounces) shredded cheese
  • 2 lbs potatoes, washed, peeled, thinly sliced
  • 1 cup sweet onion, peeled, thinly sliced


  • Preheat oven to 350°F.
  • Grease a small casserole dish.
  • Melt butter over medium heat in a small saucepan.
  • Whisk in flour until incorporated. Approximately 2 minutes.
  • Stir in the milk gradually until smooth.
  • Add salt, pepper, garlic powder, nutmeg, and thyme.
  • Bring to a boil then, simmer until sauce is thickened. Approximately 5 to 7 minutes.
  • Add 1-1/2 cups of shredded cheese, stirring until cheese is melted.
  • Cook over medium-low heat until sauce is smooth. About 3 to 5 more minutes. 
  • Combine potatoes and onions in a large bowl.
  • Add cheese sauce and toss to coat.
  • Transfer the potato mixture to the casserole dish and wrap tightly with foil.
  • Bake until potatoes are tender; about 45 to 50 minutes.
  • Remove foil and top with the remaining 1/2 cup of shredded cheese.
  • Uncovered, bake until cheese is melted and lightly browned. About 5 to 10 more minutes.
  • Let sit a few minutes to cool before serving.
  • Enjoy!


For an easy weeknight side, prepare this a day in advance and reheat prior to serving.

Inspired by and adapted from: Dairy Good