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Cheesy Potato Casserole


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  • Author: Emma
  • Total Time: 1 hour 10 minutes
  • Yield: 12 servings
  • Diet: Vegetarian

Description

A lightened-up take on a Midwest classic, this Cheesy Potato Casserole is creamy, comforting, and crowd-pleasing. Made with Greek yogurt, sour cream, and a crunchy cornflake topping, it’s the perfect side dish for holidays, potlucks, and family dinners. Vegetarian and gluten-free friendly!


Ingredients

  • 6 tablespoons butter, divided
  • 3 tablespoons flour (1:1 gluten-free all-purpose may be used)
  • 1/2 teaspoon onion powder
  • 1/4 teaspoon garlic powder
  • 1/2 teaspoon fine sea salt
  • 1/2 teaspoon black pepper
  • 1 ¾ cups milk of choice (e.g., unsweetened plain cashew milk)
  • 3/4 cup plain Greek yogurt
  • 3/4 cup sour cream
  • 1 pound (32 ounces) packaged diced potatoes, thawed
  • 1 cup shredded Monterey Jack or cheddar cheese
  • 1 cup cubed sharp cheddar cheese
  • 2 cups corn flakes cereal

Instructions

  1. Preheat oven to 350ºF and lightly grease a 9×13-inch baking dish with butter.
  2. In a medium saucepan over medium-high heat, melt 4 tablespoons butter. Whisk in the flour, onion powder, garlic powder, salt, and pepper. Cook for about 2 minutes until bubbling.
  3. Slowly whisk in the milk, stirring continuously for 4–5 minutes until thickened. Remove from heat.
  4. In the prepared baking dish, add the thawed diced potatoes. Pour in the sauce mixture, then add Greek yogurt, sour cream, shredded cheese, and cubed cheese. Stir to combine.
  5. Bake uncovered for 45 minutes.
  6. In the last 5 minutes of baking, melt the remaining 2 tablespoons butter and toss with corn flakes.
  7. Remove the casserole, top with corn flakes and extra shredded cheese if desired. Return to oven for 15 more minutes.
  8. Optional: Broil for the last 3–4 minutes for a crisp, golden top.
  9. Let stand for 15 minutes before serving.

Notes

  • To make this fully gluten-free, ensure your flour and corn flakes are certified gluten-free.
  • Use full-fat Greek yogurt and sour cream for maximum creaminess.
  • Leftovers can be refrigerated for up to 4 days and reheated in the oven.
  • Prep Time: 10 minutes
  • Cook Time: 1 hour
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 278
  • Sugar: 3g
  • Sodium: 410mg
  • Fat: 17g
  • Saturated Fat: 10g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 1g
  • Protein: 8g
  • Cholesterol: 45mg