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Closeup of diced potatoes baked au gratin with a spoon holding a helping.
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5 from 7 votes

Cheesy Diced Potato Casserole

Cheesy Diced Potato Casserole is a comforting one-pan recipe with soft and creamy diced potatoes, gooey cheese, and warm spices. The perfect potato side dish to any main meal!
Prep Time15 minutes
Cook Time47 minutes
0 minutes
Total Time1 hour 2 minutes
Course: Potato side
Cuisine: American
Servings: 4 servings
Calories: 548kcal

Ingredients

  • 4 cups of diced potatoes I used russet potatoes about 6 to 8 small potatoes
  • 2 tablespoons of butter
  • ¼ cup of minced red onion
  • 2 tablespoons of flour
  • ½ cup of chicken stock
  • ¾ cup of cream
  • 1 teaspoon of salt
  • ½ teaspoon of black pepper
  • ¼ teaspoon of nutmeg
  • 1 teaspoon of basil
  • 1 teaspoon of garlic powder
  • 2 cups shredded mozzarella cheese

Instructions

  • Preheat oven to 375 degree F. Butter a 8x8 baking dish.
  • Wash and diced (approx. ½ inch) the potatoes (I don’t peel them). and make an even layer of potatoes in the buttered dish.
  • In a medium size saucepan, melt the 2 tablespoons of butter over medium heat (2-3 minutes)
  • Once the butter is melted, add the onion and cook until they are softened. (2-3 minutes)
  • Add the flour and whisk until you have a smooth texture.
  • Add the cream and chicken stock. Whisk until the sauce is to the desire thickness (1 minute)
  • Add the salt, pepper, nutmeg, basil, and garlic powder. Cook for 1 more minute, whisking constantly.
  • Pour over potatoes and mix to coat all potatoes
  • Sprinkle shredded mozzarella cheese on top.
  • Cover with aluminum foil and bake for 28 to 30 minutes
  • Take foil off and bake for an additional 10 minutes.
  • Enjoy!

Nutrition

Calories: 548kcal | Carbohydrates: 76g | Protein: 19g | Fat: 19g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.2g | Cholesterol: 60mg | Sodium: 1059mg | Potassium: 8429mg | Fiber: 6g | Sugar: 3g | Vitamin A: 563IU | Vitamin C: 47mg | Calcium: 328mg | Iron: 4mg