There are mashed potato dishes that are good, and then there is cheesy loaded mashed potato casserole with bacon—the kind of creamy, cheesy, crispy-topped, bacon-studded side dish that steals the show at any meal. This recipe takes fluffy, buttery mashed potatoes and loads them with sharp cheddar cheese, crispy bacon, sour cream, and chives, then bakes them until golden and bubbly. It is the ultimate comfort food casserole.
The beauty of this dish is that you can use leftover mashed potatoes or make them fresh. The casserole is topped with even more cheese and bacon, then baked until the edges are crispy and the center is hot and creamy. It is perfect for holidays, potlucks, or any time you crave loaded baked potato flavors in casserole form.
This cheesy loaded mashed potato casserole is guaranteed to be a crowd-pleaser.
Why You Will Love This Cheesy Loaded Mashed Potato Casserole
· Creamy, cheesy, and loaded with bacon: The ultimate comfort food.
· Great for using leftover mashed potatoes.
· Topped with a golden, bubbly cheese crust.
· Perfect for holidays, potlucks, and weeknight dinners.
· Kid-approved and adult-pleasing.
· Make-ahead friendly.
· Customizable: Add different cheeses or toppings.
Ingredients
Here is everything you need for cheesy loaded mashed potato casserole:
For the Mashed Potatoes:
· 4 pounds russet or Yukon Gold potatoes (about 6 to 8 medium)
· 1 tablespoon salt (for the water)
· ½ cup unsalted butter, softened
· 1 cup sour cream
· ½ cup milk or half-and-half
· 1 teaspoon salt
· ½ teaspoon black pepper
For the Loaded Add-Ins:
· 8 slices bacon, cooked and crumbled (divided)
· 2 cups shredded sharp cheddar cheese (divided)
· ½ cup chopped fresh chives or green onions (divided)
For the Topping:
· 1 cup shredded cheddar cheese
· ¼ cup crumbled bacon
· 2 tablespoons fresh chives
Step-by-Step Instructions
Step 1: Cook the Potatoes
Peel and quarter the potatoes. Place them in a large pot and cover with cold water by 2 inches. Add 1 tablespoon of salt. Bring to a boil over high heat, then reduce to a simmer. Cook for 15 to 20 minutes, until the potatoes are fork-tender. Drain well.
Step 2: Cook the Bacon
While the potatoes cook, cook the bacon in a skillet over medium heat until crispy, about 6 to 8 minutes. Transfer to a paper towel-lined plate to drain. Crumble or chop into small pieces.
Step 3: Mash the Potatoes
Return the drained potatoes to the pot or transfer to a large bowl. Add the softened butter, sour cream, milk, 1 teaspoon of salt, and pepper. Mash with a potato masher or electric mixer until smooth and creamy.
Step 4: Add the Loaded Ingredients
Stir in half of the crumbled bacon (about ½ cup), 1½ cups of the shredded cheddar cheese, and half of the chives. Stir until combined.
Step 5: Transfer to Baking Dish
Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Grease a 9×13-inch baking dish or a 3-quart casserole dish. Spread the mashed potato mixture evenly into the prepared dish.
Step 6: Add the Topping
Sprinkle the remaining 1 cup of cheddar cheese over the top. Sprinkle with the remaining crumbled bacon and remaining chives.
Step 7: Bake
Bake uncovered for 20 to 25 minutes, until the casserole is hot and bubbly and the cheese is melted and lightly golden.
Step 8: Rest and Serve
Let the casserole rest for 10 minutes before serving. Garnish with additional chives if desired.
Make-Ahead Instructions
Step 1: Assemble and Refrigerate
Prepare the casserole as directed but do not bake. Cover tightly with plastic wrap or foil and refrigerate for up to 2 days.
Step 2: Bake
When ready to serve, let the casserole sit at room temperature for 30 minutes. Bake at 375 degrees Fahrenheit for 25 to 30 minutes, until hot and bubbly.
Slow Cooker Method
Step 1: Prepare the Mashed Potatoes
Prepare the mashed potatoes as directed.
Step 2: Transfer to Slow Cooker
Grease a 6-quart slow cooker. Spread the mashed potato mixture into the slow cooker. Top with remaining cheese and bacon.
Step 3: Slow Cook
Cover and cook on LOW for 2 to 3 hours or on HIGH for 1 to 1½ hours, until hot and the cheese is melted.
Step 4: Serve
Serve directly from the slow cooker.
Cooking Tips and Pro Tips for Best Results
· Use Yukon Gold potatoes for creaminess: They are naturally buttery and creamy. Russets are also excellent.
· Do not overmix the potatoes: Overmixing can make them gluey. Mix just until smooth.
· Use freshly shredded cheese: Pre-shredded cheese contains anti-caking agents that prevent smooth melting.
· Save some toppings for the top: The crispy bacon and extra cheese on top create a golden, bubbly crust.
· Make it ahead: This casserole is perfect for making a day in advance.
Variations and Substitutions
· Add garlic: Roast a head of garlic and mash the cloves into the potatoes.
· Add cream cheese: Add 4 ounces of softened cream cheese for extra creaminess.
· Add jalapeños: Add diced pickled jalapeños for heat.
· Use different cheese: Monterey Jack, Gouda, or a Mexican blend work well.
· Use turkey bacon: For a lighter option.
· Vegetarian: Omit the bacon or use plant-based bacon.
Serving Suggestions
This cheesy loaded mashed potato casserole is delicious served:
· Alongside roasted chicken, steak, or pork chops: A perfect side dish.
· For Thanksgiving or Christmas dinner: A crowd-pleasing alternative to plain mashed potatoes.
· For a potluck: Stays warm and travels well.
· With a dollop of sour cream: Adds extra creaminess.
Storage and Reheating Instructions
Refrigerator Storage
Store leftovers in an airtight container in the refrigerator for up to 5 days.
Freezer Storage
This casserole freezes well for up to 2 months. Cool completely, then wrap tightly with plastic wrap and foil. Thaw overnight in the refrigerator before reheating.
Reheating Instructions
· Oven method (best): Preheat to 325 degrees Fahrenheit. Cover with foil and heat for 15 to 20 minutes.
· Microwave method: Heat individual portions for 45 to 60 seconds.
· Skillet method: Reheat in a covered skillet over medium-low heat.
Nutritional Information
Approximate per serving (based on 8 servings, with bacon and cheddar):
· Calories: 520
· Protein: 18g
· Fat: 32g
· Saturated Fat: 18g
· Carbohydrates: 38g
· Fiber: 4g
· Sugar: 4g
· Sodium: 780mg
· Vitamin A: 15% DV
· Vitamin C: 15% DV
· Calcium: 25% DV
· Iron: 10% DV
Note: Nutritional values are estimates and will vary based on specific ingredients and portion sizes.
Frequently Asked Questions
Can I use instant mashed potatoes?
Yes. Prepare 4 cups of instant mashed potatoes according to package directions. Proceed with the recipe.
Can I use leftover mashed potatoes?
Yes. You will need about 6 to 8 cups of leftover mashed potatoes. Proceed with the recipe.
Why are my potatoes gluey?
Overmixing releases too much starch. Mash until just smooth.
Can I add cream cheese?
Yes. Add 4 ounces of softened cream cheese for extra creaminess.
Can I make this dairy-free?
Use dairy-free butter, sour cream, milk, and cheese.
Can I freeze this casserole?
Yes. Freeze before or after baking. Thaw overnight before reheating.
How do I get a crispy top?
Bake uncovered. For extra crispiness, broil for the final 1 to 2 minutes.
Can I add other vegetables?
Yes. Roasted garlic, caramelized onions, or sautéed mushrooms are excellent additions.
Final Thoughts
Cheesy loaded mashed potato casserole with bacon is the ultimate comfort food side dish. Creamy, buttery mashed potatoes are loaded with sharp cheddar cheese, crispy bacon, sour cream, and chives, then baked until golden and bubbly. It is like a loaded baked potato in casserole form.
This recipe is perfect for holidays, potlucks, or any time you want to elevate a classic side dish. It is make-ahead friendly, freezer-friendly, and guaranteed to be a hit.
So boil those potatoes, cook that bacon, and shred that cheese. That is the beauty of comfort food—simple ingredients, big flavor, and a whole lot of deliciousness.