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The BEST Cheesy Potato Casserole

This cheesy potato casserole is the BEST comfort food, and you have likely enjoyed it a time or two at potlucks and picnics. This beloved family recipe is rich, creamy, and full of cheesy goodness. Make it from scratch with a simple ingredient list and leave the canned and processed soups behind!
Course Side Dish
Cuisine American
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings 8
Calories 448kcal

Equipment

  • Oven-safe casserole dish
  • saucepan
  • whisk
  • Non-stick spray

Ingredients

  • 28 oz bag diced frozen potatoes O'Brien
  • 4 tablespoons butter
  • 1/4 cup all-purpose flour can also use a gluten-free option
  • 1 ½ cups chicken broth
  • 1/2 cup heavy whipping cream
  • 1/2 teaspoon salt
  • 1/2 teaspoon garlic powder
  • ¼ teaspoon pepper
  • 8 oz shredded cheddar cheese
  • 6 oz can French fried onions regular or gluten-free

Instructions

  • Preheat oven to 350 ℉
  • Spray a 6x9 casserole dish with nonstick cooking spray
  • Add potatoes evenly to dish
  • In a saucepan, melt butter
  • Whisk in flour until smooth and continue to stir for 1-2 more minutes to slightly cook flour mixture
  • Very slowly, start pouring in chicken broth while whisking to ensure no lumps form
  • Add cream, salt, garlic powder, and pepper and bring to a simmer while continuing to whisk for about 4-5 minutes until mixture thickens enough to coat a spoon
  • Remove from heat and mix in cheese until melted and smooth
  • Pour sauce over potatoes and stir to combine
  • Bake for 45 minutes or until heated through and bubbly
  • Remove and top with French fried onions to serve

Notes

  • Store leftovers in an airtight container in the fridge for up to 4 days. Freezing is not recommended due to texture changes. Reheat at 350°F for 15-20 minutes in the oven or in short microwave intervals, stirring in between.
  • Bake uncovered in the oven for a golden top.
  • Shred your own cheese from the block for the best melting results!
  • Frozen potatoes do not need to be thawed before cooking.
  • Make ahead: Prepare and assemble as directed (minus the topping) up to a day in advance, cover, and refrigerate. Add 5-10 minutes to the baking time if the casserole is cold from the fridge.

Nutrition

Calories: 448kcal | Carbohydrates: 31g | Protein: 10g | Fat: 32g | Saturated Fat: 17g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.2g | Cholesterol: 61mg | Sodium: 742mg | Potassium: 336mg | Fiber: 2g | Sugar: 1g | Vitamin A: 679IU | Vitamin C: 8mg | Calcium: 225mg | Iron: 1mg