Creamy Au Gratin Potatoes

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193 comments
Servings: 6
PREP
15 mins
COOK
1 hr 30 mins
READY IN
1 hr 45 mins
Ingredients
  • 6 russet potatoes, peeled and sliced into 1/4 inch slices
  • 3 tablespoons butter
  • 3 tablespoons all-purpose flour
  • 1 teaspoon salt
  • 1 1⁄2 cups milk
  • 1 1⁄2 cups shredded cheddar cheese
  • paprika
  • 1 dash cayenne (optional)
Directions
  • Preheat oven to 400 degrees.
  • Butter a large square casserole dish.
  • Layer 1/2 of the potatoes into bottom of the prepared casserole dish.
  • Top with the onion, and add the remaining potatoes.
  • Season with salt and pepper to taste.
  • In a medium-size saucepan, melt butter over medium heat.
  • Mix in the flour and salt, and stir constantly with a whisk for one minute.
  • Stir in milk.
  • Cook until mixture has thickened.
  • Stir in cheese all at once, and continue stirring until melted, about 30 to 60 seconds.
  • Pour cheese mixture over the potatoes, sprinkle with paprika and cover the dish with aluminium foil.
  • Bake 1 1/2 hours in the preheated oven.