If the picture doesn’t make you want to try this recipe, maybe the description will! This loaded mashed potato casserole is a delicious combination of fluffy and creamy mashed potatoes, crispy bacon, and melted cheese. It is an easy side dish that completely steals the show.
It’s the perfect dish for any occasion. Whether you’re planning a holiday spread, bringing a dish to a family gathering, or just craving something warm and indulgent on a weeknight, this recipe brings all the comfort without the complication. This casserole is made with classic flavors layered together in the most satisfying way.
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If you’ve ever felt like mashed potatoes are too predictable, this casserole will completely change your mind. It elevates a classic comfort food into something that will get requested again and again. And it’s easy enough that you won’t mind the requests! Plus, it’s an easy way to add bold flavors and creamy textures to dinner, instead of serving plain potatoes again.
So if you’re ready to make everyone’s new favorite side dish, let’s dive into everything you need to know about this Loaded Mashed Potato Casserole.
Why You’ll Love This Recipe
There are mashed potatoes, and then there is mashed potato casserole. This is comfort food at its absolute best. When all of the ingredients bake together into one golden, bubbling dish, the result is downright irresistible. Here are a few more reasons to love this dish.
- It’s perfect for feeding a crowd
- A simple and practical recipe
- Easy to make ahead
- Endlessly customizable
- Reheats the next day beautifully (if it lasts that long)
What’s In The Loaded Mashed Potato Casserole
This recipe takes everything you love about a loaded baked potato and transforms it into a warm, bubbly casserole that’s perfect for everyone. Take these simple ingredients and get ready to turn them into a mouthwatering crowd-pleaser.
- Mashed Potatoes
- Shredded Cheddar Cheese
- Crispy Bacon
- Sour Cream
- Melted Butter
- Milk
- Salt
- Pepper
Measurements for each ingredient, along with instructions for making this Loaded Mashed Potato Casserole, are in the printable recipe card below.
Printable Loaded Mashed Potato Casserole Recipe Card
Ingredients
- 4 lb Yukon gold potatoes, peeled and diced
- 6 tbsp butter, unsalted
- 1 cup sour cream
- ½ cup milk
- 2 cups cheddar cheese, shredded
- 1 lb bacon, cooked and crumbled
- salt and pepper, to taste
Instructions
- Preheat the oven to 350℉.
- Add the diced potatoes to a large pot, add plenty of salt, and fill the pot with enough water to cover the potatoes.
- Bring the water to a boil and cook, uncovered, for about 15 minutes, or until the potatoes are fork-tender.
- Drain the potatoes well, then return to the pot.
- Add the butter, milk, and sour cream to the potatoes and mash well until smooth and creamy.
- Add in half of the cheese and all but 1/4 cup of crumbled bacon. Mix to combine.
- Spread the mashed potato mixture into a casserole dish. Sprinkle with the remaining cheese and remaining crumbled bacon.
- Bake for 20-25 minutes. A few minutes before removing it from the oven, turn on the broil and broil for 3-5 minutes to get the cheese a nice golden-brown.
Nutrition
Ingredient Substitutions & Variations
One of the best things about loaded mashed potato casserole is its adaptability. Whether you’re working with dietary restrictions, trying to use up what’s in your pantry, or just looking to have some fun and experiment, there are plenty of ways to make it your own.
Substitutions
- Gold vs. Red Potatoes: Yukon gold potatoes have a buttery flavor and creamy consistency and are the most common choice for mashed potatoes, but red potatoes lend a different flavor and a great texture when you leave the skins on.
- Milk: Replace the milk with heavy cream for extra richness, or use a lighter, dairy-free option like plant-based milk.
- Sour Cream: Substitute sour cream for plain Greek yogurt for a tangy, protein-rich boost, or use a vegan/dairy-free version. Cream cheese also makes a great substitute or addition to sour cream!
- Butter: Use a plant-based butter if you are making this recipe dairy-free
- Cheese: Sharp cheddar cheese is classic, but experiment with other cheeses like Monterey Jack, smoked Gouda, pepper jack, or Parmesan to add more flavor and depth to this dish.
- Bacon: If you don’t eat pork or prefer alternatives, try this recipe with turkey bacon, plant-based bacon crumbles, or even sautéed mushrooms for a vegetarian option.
Variations
Elevate the flavor of this dish by mixing in some or all of the following:
- Roasted garlic
- Caramelized onions
- Chopped chives
- Smoked paprika or Cayenne
- Toasted breadcrumbs on top
Try out some of these swaps to lighten the dish:
- Use reduced-fat sour cream
- Swap half the butter for olive oil
- Swap the sour cream for plain Greek yogurt
- Use reduced-fat cheeses
Turn it into a main dish by bulking it up with some of these options:
- Add shredded rotisserie chicken
- Stir in cooked broccoli or spinach
- Mix in ground beef for a shepherd’s pie-style twist
Tips & Tricks
Even simple recipes can benefit from a few techniques. These tips ensure your loaded mashed potato casserole turns out creamy and flavorful every time.
Cook Potatoes Properly
Always start potatoes in cold, salted water. This allows for gradual, even cooking. Bring them to a boil and cook just until they can be easily pierced with a fork. Drain them thoroughly and let them sit and drain for a few minutes to allow steam to escape before mashing. Excess water can make potatoes gluey.
Taste Before Baking
Flavors can mellow slightly during baking, so taste and adjust seasoning throughout the cooking process, and always at the end before you bake the casserole. This will allow you to add more seasoning to your liking and avoid serving an underseasoned dish.
Layer For Better Texture
Instead of mixing all the cheese into the casserole, reserve some for the top. This creates a golden, bubbly crust that adds a lovely look and texture to the dish. Consider sprinkling the top with some toasted breadcrumbs, too, for an extra crunch!
Let It Rest
Allow the casserole to sit for 5-10 minutes after baking. This helps it firm up slightly, making it easier to serve, and helps the flavors to settle together.
Serving Suggestions & Pairings
Loaded mashed potato casserole is the ideal dish for everyday dinner and special occasions. Pair it right, and it becomes a memorable dish to make a part of your holidays year after year.
It’s the perfect side to a roast turkey or chicken, prime rib, or glazed ham. On a casual weeknight, serve it up alongside meatloaf, grilled chicken breasts, or even a simple green salad. Turn that into a complete meal with some steamed or roasted veggies like green beans, brussels sprouts, or asparagus. The acidity and crunch create balance for the whole meal.
This dish also travels well and appeals to most eaters, making it perfect for potlucks and gatherings!
How To Store, Reheat, & Use Leftovers
Aside from how delicious this dish is fresh from the oven, one of my other favorite things about this recipe is how well it keeps. Whether you’re prepping ahead for a holiday or have leftovers from dinner, this dish holds up beautifully when stored and reheated properly.
Storing Loaded Mashed Potato Casserole
If you have leftovers, allow the casserole to cool completely before storing. This helps prevent excess condensation, which can make the potatoes watery.
Transfer leftovers to an airtight container or cover the baking dish tightly with plastic wrap or foil. Stored in the refrigerator, the casserole will stay fresh for 3-4 days.
How To Reheat It
The biggest concern when reheating mashed potato casserole is dryness. Fortunately, this is easy to fix.
Preheat the oven to 325ºF. Add a splash of milk over the potatoes, cover loosely with foil, and heat for about 20-25 minutes, or until warmed through. Remove the foil and stir gently to loosen up the potatoes.
In the microwave, place a portion in a microwave-safe bowl, add a splash of milk, and cover with a microwave-safe plate or damp paper towel to trap the moisture. Heat in 30-second intervals, stirring in between each time to ensure it warms through evenly.
Creative Ways To Use Leftovers
Instead of just reheating the same leftovers (if there are any left), turn them into something new!
- Mashed Potato Pancakes: Form the cold leftovers into patties, and pan-fry in butter or oil until golden brown.
- Easy Shepherd’s Pie: Layer ground beef and vegetables in a baking dish, spread the mashed potato mixture on top, and bake until bubbly.
- Creamy Potato Soup Base: Thin out the leftovers in a pot with broth or cream, then simmer it to use as the base for a flavorful potato soup.
Mashed Potato Casserole FAQs
For top questions that people ask, we’ve got answers here. Each answer is here to take away any doubts and help you on your way to making your new favorite casserole.
Can I Make This Using Leftover Mashed Potatoes?
This recipe is a great way to use leftover mashed potatoes! To follow this recipe as written, you’ll need about 8 cups of mashed potatoes. If you have less than that leftover, just cut the recipe quantities in half and make a smaller portion. For example, use 4 cups of mashed potatoes, 1 cup of cheddar cheese, 1/2 lb bacon, and any other add-ins you would like.
When using leftover mashed potatoes, adjust the moisture level to prevent them from drying out when reheating. Add 1/4 cup of milk at a time to the mashed potatoes, mixing it in and checking the consistency before adding more. You want them to be soft and creamy, not hard and thick. Taste and adjust the seasoning of the leftover mashed potatoes before baking them again.
Once you have reconstituted the mashed potatoes to your liking, add any remaining mix-ins you’d like, spread them into a baking pan, top with cheese and bacon, and bake according to the recipe card above. And voila, you’ve turned your leftovers into a whole new meal!
What is the Best Cheese to Use?
There is no right or wrong answer to this question. In this recipe, I keep it simple and classic with cheddar, but changing up the cheeses is a great way to add even more flavor to this dish. Try mozzarella, smoked Gouda, pepper jack, or Parmesan, for starters. Mixing a couple of types of cheese into this recipe gives the best balance and flavor.
Tip: Buy your cheese in blocks and shred it at home. Pre-shredded cheese often contains additives that can make it more difficult to melt into a dish.
Can I Make Loaded Mashed Potato Casserole Ahead of Time?
This casserole is an excellent make-ahead dish, which makes it perfect for holidays and entertaining. You can fully prepare this dish up to 24 hours in advance. Wrap it tightly in plastic wrap or aluminum foil and store it in the fridge.
When you’re ready to bake, let it sit at room temperature for about 20-30 minutes, then bake it as directed in the recipe above, adding an extra 5-10 minutes if heating the dish straight from the fridge. Preparing it ahead of time not only saves time but also allows the flavors to meld together even more.
How Do I Keep This Casserole From Becoming Dry?
The key to preventing dryness in this dish is incorporating enough fat and moisture into the mashed potatoes. Using enough butter, sour cream, and milk ensures that the potatoes stay rich and creamy during baking. Be sure not to overbake the casserole, as this can cause the top to dry out. Covering the dish loosely with foil during part of the baking process can help retain moisture, especially if you’re reheating leftovers. Adding an extra splash of milk can help to restore a softer consistency.
Can I Make This Recipe Vegetarian?
This is an easy dish to turn vegetarian or even vegan! The easiest way to make the loaded mashed potato casserole vegetarian is to simply omit the bacon or replace it with a plant-based alternative. Try substituting it with sautéed mushrooms, caramelized onions, or steamed broccoli.
And with the abundance of vegan and plant-based products now available, this dish can be turned vegan-friendly with a few swaps! Use dairy-free alternatives for the milk, butter, cheese, and sour cream, to make this perfect for a variety of diets.
Casserole Craze
This loaded mashed potato casserole is ready to become a part of your regular rotation. It’s dependable, comforting, and guaranteed to bring people back to the table for seconds. And what makes it even better is how simple it is. With a handful of everyday ingredients, you can create a dish perfect for everyday dinners or special celebrations.
Don’t be afraid to make this casserole your own. Swap the cheeses to bring in various flavors, add roasted garlic or caramelized onions, or turn up the heat with pepper jack cheese and some smoked paprika. This recipe is flexible and designed to fit your taste preferences.
If you try it out, I’d love to hear how it turns out for you. And if you enjoyed it, be sure to save it for later so your next potluck is a breeze. Comfort food never goes out of style, and this is one of those dishes you’ll be glad to have in your back pocket.
Related Recipes
Looking for more perfect side dish recipes? Try these easy and delicious family favorite recipes!
- Scalloped Corn Casserole
- Buffalo Cauliflower Bites
- Tomato and Cucumber Salad
- Brown Sugar and Honey Glazed Carrots
- Easy Chinese Green Beans
- Creamy Cucumber Salad
From fresh salads to warm comfort sides, these recipes make it easy to round out any meal.
Save This Recipe!
Save this recipe or print it using the printable recipe card above. And if you loved it, be sure to leave a comment to share your thoughts and connect with other home cooks!
