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Delicious Cheesy Mashed Potato Bake, perfect for any meal

Classic Cheesy Mashed Potato Bake

This comforting Classic Cheesy Mashed Potato Bake features creamy, buttery mashed Russet potatoes generously mixed with sharp cheddar and mozzarella, then baked until golden and bubbly. It's the perfect side dish for any meal or a delightful main course.
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Prep Time 25 minutes
Cook Time 50 minutes
Total Time 1 hour 25 minutes
Servings 8 servings
Calories 480 kcal

Equipment

  • large pot
  • colander
  • potato masher
  • 9x13 inch baking dish
  • oven

Ingredients
  

Main Ingredients

  • 6 large Russet potatoes peeled and cut into 1-inch pieces
  • 1 tablespoon salt for boiling water
  • 1/2 cup unsalted butter melted
  • 3/4 cup whole milk warmed
  • 1/2 cup sour cream
  • 1 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/4 teaspoon black pepper
  • 1.5 cups sharp cheddar cheese shredded (divided)
  • 1 cup mozzarella cheese shredded
  • 1/4 cup Parmesan cheese grated (optional, for topping)
  • 2 tablespoons fresh chives chopped (for garnish, optional)

Instructions
 

Preparation

  • Place peeled and cut potatoes into a large pot, cover with salted cold water, bring to a boil, then simmer for 15-20 minutes until fork-tender; drain thoroughly.
  • Return the hot, drained potatoes to the pot and add melted butter, warmed whole milk, sour cream, garlic powder, onion powder, and black pepper.
  • Mash the ingredients until the potatoes are smooth and creamy, being careful not to over-mash.
  • Fold in 1 cup of shredded sharp cheddar cheese and all the shredded mozzarella cheese gently until combined and melting.

Baking

  • Lightly grease a 9x13 inch baking dish and spread the mashed potato mixture evenly into it.
  • Sprinkle the remaining 1/2 cup of shredded sharp cheddar cheese over the top, and optionally add grated Parmesan cheese.
  • Bake in a preheated oven at 375°F (190°C) for 25-30 minutes, or until the top is golden brown and bubbly.

Serving

  • Let the bake rest for 5-10 minutes before serving, then garnish with fresh chopped chives if desired.

Notes

Be careful not to over-mash the potatoes to prevent a gummy texture. Allowing the bake to rest for a few minutes after baking helps it set and makes for easier serving. Garnish with fresh chives for a burst of flavor and color.