Mashed potato casserole transforms classic mashed potatoes into a delicious baked dish that’s even more comforting and flavorful. The creamy potatoes blend beautifully with melted cheese, creating a rich and satisfying texture in every bite.
Another reason to love this recipe is how convenient it is for gatherings. It can be prepared ahead of time and baked just before serving, making it ideal for busy holiday meals or large family dinners.
This dish is also highly customizable. You can add ingredients like bacon, herbs, or extra cheese to suit your taste while still keeping the comforting base of creamy mashed potatoes.
Ingredients
(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)
potatoes, peeled and chopped butter sour cream milk cheddar cheese, shredded cream cheese, softened garlic powder salt black pepper green onions, chopped breadcrumbs (optional)
Directions
Preheat the oven to 375°F (190°C) and lightly grease a baking dish.
Place the peeled and chopped potatoes in a large pot and cover with water.
Bring the water to a boil and cook the potatoes for about 15 to 20 minutes, or until they are fork-tender.
Drain the potatoes and return them to the pot.
Add butter, sour cream, cream cheese, milk, garlic powder, salt, and black pepper.
Mash the potatoes until smooth and creamy.
Stir in half of the shredded cheddar cheese and mix well.
Transfer the mashed potatoes to the prepared baking dish and spread evenly.
Sprinkle the remaining cheddar cheese on top and add breadcrumbs if desired.
Bake for 20 to 25 minutes, or until the top is golden and the casserole is heated through.
Loaded Mashed Potato Casserole Add cooked bacon bits and extra cheese on top for a loaded baked potato flavor.
Garlic Mashed Potato Casserole Roast a few cloves of garlic and mash them into the potatoes for a deeper garlic flavor.
Herb Mashed Potato Casserole Mix in fresh herbs such as parsley, thyme, or chives to add freshness and aroma.
Spicy Mashed Potato Casserole Add diced jalapeños or a pinch of cayenne pepper for a bit of heat.
Ham and Cheese Potato Casserole Stir in diced cooked ham for a heartier casserole that can also work as a main dish.
Storage/Reheating
Store leftover mashed potato casserole in an airtight container in the refrigerator for up to 4 days.
To reheat, place the casserole in the oven at a low temperature until warmed through. You can also reheat individual portions in the microwave.
If the potatoes seem dry after reheating, add a small amount of milk and stir gently to restore the creamy texture.
This casserole can also be frozen for up to 2 months. Thaw in the refrigerator overnight before reheating.
FAQs
Can I make mashed potato casserole ahead of time?
Yes, you can assemble the casserole a day in advance and store it in the refrigerator until ready to bake.
What type of potatoes work best?
Russet or Yukon Gold potatoes work very well because they produce creamy mashed potatoes.
Can I use leftover mashed potatoes?
Yes, leftover mashed potatoes are perfect for this recipe and help reduce preparation time.
How do I keep the casserole creamy?
Using ingredients like sour cream, butter, and cream cheese helps maintain a creamy texture.
Can I add vegetables to the casserole?
Yes, vegetables such as broccoli, peas, or sautéed mushrooms can be mixed into the potatoes.
Can I use different cheeses?
Yes, cheeses like mozzarella, Monterey Jack, or gouda can be used instead of cheddar.
Why are my mashed potatoes gummy?
Overmixing the potatoes can cause them to become gummy. Mash them just until smooth.
Can this casserole be made without dairy?
Yes, you can substitute dairy-free butter, plant-based milk, and dairy-free cheese alternatives.
How do I make the top crispy?
Sprinkling breadcrumbs or extra cheese on top before baking helps create a golden crust.
Can I double this recipe?
Yes, simply double the ingredients and use a larger baking dish to accommodate the mixture.
Conclusion
Mashed potato casserole is a comforting and flavorful dish that elevates traditional mashed potatoes into a creamy, cheesy baked side. Easy to prepare and perfect for making ahead, it’s an excellent addition to family meals, holiday tables, or potluck gatherings. With its rich texture and delicious topping, this casserole is sure to be a crowd favorite.
This Mashed Potato Casserole is a creamy, cheesy baked potato dish made with buttery mashed potatoes, sour cream, and melted cheddar cheese. Perfect for holidays, family dinners, or potlucks, this comforting casserole features a rich texture and a golden, flavorful topping.
Author:Catherine
Prep Time:20 minutes
Cook Time:25 minutes
Total Time:45 minutes
Yield:8 servings
Category:Side Dish
Method:Baking
Cuisine:American
Diet:Vegetarian
Ingredients
2 lbs potatoes, peeled and chopped
3 tablespoons butter
½ cup sour cream
½ cup milk
1 ½ cups cheddar cheese, shredded
4 oz cream cheese, softened
1 teaspoon garlic powder
1 teaspoon salt
½ teaspoon black pepper
¼ cup green onions, chopped
¼ cup breadcrumbs (optional
Instructions
Preheat the oven to 375°F (190°C) and lightly grease a baking dish.
Place the peeled and chopped potatoes in a large pot and cover with water.
Bring to a boil and cook for 15–20 minutes, or until the potatoes are fork-tender.
Drain the potatoes and return them to the pot.
Add the butter, sour cream, cream cheese, milk, garlic powder, salt, and black pepper.
Mash the potatoes until smooth and creamy.
Stir in half of the shredded cheddar cheese and mix well.
Transfer the mashed potatoes to the prepared baking dish and spread evenly.
Sprinkle the remaining cheddar cheese on top and add breadcrumbs if desired.
Bake for 20–25 minutes until the top is golden and bubbly.
Garnish with chopped green onions and serve warm
Notes
Russet or Yukon Gold potatoes produce the creamiest mashed potatoes.If using leftover mashed potatoes, simply mix in the remaining ingredients and bake.If the casserole seems dry when reheating, stir in a small splash of milk.
