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–+ servings
Potatoes au gratin in a clear casserole dish with a silver spoon in the dish

Cheesy Au Gratin Potatoes

Tiffany
Cheesy au gratin potatoes baked to perfection with smoked paprika, thyme, dry mustard, and garlic in a creamy cheddar and Parmesan cheese sauce.
5 from 4 votes
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Prep Time 10 minutes
Cook Time 1 hour 25 minutes
Total Time 1 hour 35 minutes
Course Side Dishes
Cuisine American, French
Servings 6 Servings
Calories 483 kcal

Equipment

Ingredients
  

  • 1.5 pounds Yukon Gold Potatoes unpeeled
  • 3 tablespoons Butter
  • ¼ cup All-Purpose Flour
  • 1 cup Milk
  • 1 cup [Half & Half]
  • 2 cups Shredded Mild Cheddar Cheese
  • ½ cup Grated Parmesan Cheese
  • ½ teaspoon Smoked Paprika
  • ½ teaspoon Garlic Powder
  • ½ teaspoon Thyme
  • ½ teaspoon Dry Mustard Powder
  • 1 teaspoon Salt
  • ¼ teaspoon Black Pepper

Instructions
 

  • Rinse the potatoes and slice into ⅛" to ¼" slices. Leave them unpeeled. Lightly grease a 2 quart baking dish and layer the potatoes.
  • Preheat oven to 400 degrees Fahrenheit.
  • In a saucepan, melt butter over medium-high heat. Add flour and mix well. Whisk in milk and half & half slowly to mix with the flour. Add in all seasonings, 1 ½ cups of cheddar, and all of the Parmesan cheese. Cook until cheese is melted through, then pour over top of the potatoes.
  • Cover the dish with foil and bake for 60 minutes. Remove foil and bake an additional 15-20 minutes or until tender. In the last 5 minutes, sprinkle remaining ½ cup of cheddar cheese on top.

Nutrition

Calories: 483kcalCarbohydrates: 43gProtein: 19gFat: 27gSaturated Fat: 16gPolyunsaturated Fat: 9gTrans Fat: 1gCholesterol: 80mgSodium: 912mgFiber: 4gSugar: 4g