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The Boat Shed Kitchen

Potatoes au Gratin

This easy Potatoes au Gratin recipe features tender sliced russet potatoes baked in a creamy garlic cheese sauce with layers of cheddar and parmesan. It’s the ultimate side dish for holidays or weeknight dinners alike!
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Prep Time 20 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 30 minutes
Servings: 6
Calories: 280
Ingredients Method Notes

Ingredients
  

  • 2 pounds russet potatoes peeled and thinly sliced
  • 2 tablespoons butter
  • 2 cloves garlic minced
  • 2 tablespoons all-purpose flour
  • 1 cup whole milk
  • 1 1/2 cups shredded cheddar cheese
  • 1/2 cup grated parmesan cheese
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper

Method
 

  1. Preheat oven to 375°F and butter a baking dish.
  2. Melt butter, cook garlic, stir in flour.
  3. Gradually add milk, simmer until thick.
  4. Remove from heat; stir in cheeses, salt, pepper.
  5. Layer potatoes and sauce in dish.
  6. Cover and bake 45 minutes, uncover and bake 20–25 minutes more.
  7. Cool slightly before serving.
  8. See full steps with tips & photos → https://theboatshedcafe.com/potatoes-au-gratin/

Notes

  • Slice the potatoes evenly to ensure they cook uniformly.
  • A mandoline slicer can help you get super thin, perfect slices.
  • You can swap cheddar for gruyère for a nuttier flavor twist.