Golden edges, bubbling cheese, and crisp bacon crumbles make this easy loaded baked potato casserole the kind of side dish everyone reaches for first. Fluffy mashed russet potatoes are blended with butter, sour cream, and sharp cheddar, then baked until the top is melty and lightly browned, with fresh chives and parsley adding just the right pop of color and flavor.
It is simple enough for a weeknight but special enough for holidays, or that night when you want to bless a small group or a tired friend with a comforting meal that says you are seen and you are loved.
Loaded Baked Potato Casserole
This loaded baked potato casserole for a crowd is make-ahead friendly, so you can assemble it early and bake it when guests arrive. It’s perfect for feeding a crowd since it is creamy and cheesy, and you can easily double the recipe and bake it in a larger pan. Leftovers reheat well for simple lunches, as well. Made with basic ingredients, it’s flexible enough to adjust the seasoning, cheese, and toppings to your family’s tastes, and it travels well for sharing with a neighbor or bringing to church, potluck, or a small group. If you’re looking for more easy, crowd-friendly dishes like this make-ahead loaded baked potato casserole, be sure to check out my other side dish recipes.
Ingredient Notes
Here’s a quick overview of the key ingredients for this recipe. For the full list of ingredients and exact measurements, be sure to check the recipe card at the bottom of this post.
- Russet potatoes: Choose firm, smooth potatoes with no green spots. These are the same type used in my Air Fryer Baked Potato recipe, which is great if you want another easy potato option.
- Milk: Use your favorite low-fat milk and warm it slightly or add it at room temperature so it blends smoothly into the potatoes.
- Butter: Reach for real butter for the best flavor and melt it before adding.
- Sour cream: Pick a full-fat sour cream for richness and tang and stir it in gently.
- Cheddar cheese: Shred a block of sharp cheddar for the best melt and flavor, and plan to fold some into the potatoes while saving the rest to sprinkle over the top.
- Bacon: Cook your favorite thick-cut bacon until crisp (see How to Cook Bacon in the Microwave to Crispy Perfection), then crumble it.
Smart Shortcut Tip
If you are short on time, you could easily pick up premade mashed potatos from Costco or your grocery store. Also, you could make my crock pot mashed potatos or Non-dairy mashed potatoes, the day before.
How To Make Loaded Baked Potato Casserole
Make Mashed Potato Base
Begin with a pot of hot, fluffy mashed russet potatoes made using the method in the recipe card or your favorite mashed potato recipe.
While the potatoes are warm, stir in the melted butter, milk, sour cream, salt, and pepper until smooth and creamy. Fold in most of the shredded cheddar so it melts into the potatoes.
Bake and Finish
Lightly coat your baking dish with cooking spray. Spread the cheesy mashed potatoes in an even layer, then sprinkle the remaining cheddar on top.
Cover the dish with foil and bake in your preheated oven until the potatoes are hot and the cheese is melting. Remove the foil, add the crumbled bacon, and bake again until the top is bubbly.
Give it just a minute to settle, then sprinkle chopped chives and parsley over the hot casserole for a bright, fresh finish.
What do I serve with loaded baked potato casserole for a crowd?
This casserole goes well with simple proteins like Glazed Ham With Marmalade (Sticky Sweet Crusted), Juicy and Tender Crock Pot Whole Chicken Recipe, Crock Pot Pork Chops and Sauerkraut With Gravy, or grilled sausage, plus a green salad or steamed vegetables. It’s rich and filling, so you can keep the rest of the plate very simple.
Variations, Substitutions, and Recipe Tips
Dietary Modifications: For a lighter option, use reduced-fat sour cream and milk, swap some sour cream for plain Greek yogurt, and use a little less cheese. For pork-free, use turkey bacon or a plant-based alternative.
Flavor Enhancements: For extra depth, stir a spoonful of roasted garlic or a pinch of smoked paprika into the mashed potatoes, or use a blend of sharp cheddar and another melting cheese for more complexity
Add In Options: Add extra bacon on top for more crunch. You can also fold in finely chopped cooked broccoli or peppers for color and a bit of veggie goodness.
Simple Substitutions: If you do not have russet potatoes, you can use Yukon gold potatoes, and if you’re low on sour cream, use a little extra milk and butter. Swap another good melting cheese in place of cheddar.
Tips for Recipe Success: Avoid using a food processor for the mashed potatoes so they stay creamy instead of gummy. If you bake this make ahead loaded baked potato casserole straight from the fridge, plan on a little extra oven time. For more cheesy casserole ideas, check out this Creamy Loaded Baked Chicken Potato Casserole or this Cheesy Mexican Casserole Recipe with Ground Beef.
Hospitality Challenge
Invite a young family with little kids or a single parent who rarely gets a break from cooking and cleanup, and serve this loaded baked potato casserole on a weeknight when everyone is tired and hungry. The creamy, familiar flavors make it easy for adults and kids alike to relax and enjoy the table together, with plenty of seconds if they want them. Pair it with a simple main dish like Easy Maple Glazed Pork Chops in 20 Minutes, a Greek Wedge Salad, and maybe Strawberry Jello Pie (Easy No-Bake Dessert) for dessert, so the meal feels complete without a lot of work. Keep the evening unhurried, letting conversation and laughter rise naturally around the table. Sometimes the greatest gift you can offer is a hot meal, a full plate, and a place where a weary family can exhale and feel truly cared for.
More Cozy Casserole Favorites
- Delicious Sloppy Joe Casserole With Cheesy Cornbread Topping
- Creamy Turkey Rice Casserole for Cozy Leftovers
- Easy Chicken Pot Pie Casserole with Golden Puff Pastry
- Chicken and Rice Casserole Recipe
- Crock Pot Enchilada Casserole (Easy Cheesy Layers)
This easy loaded baked potato casserole is the kind of recipe you’ll reach for again and again when you are feeding people you care about. If you have any questions about making this recipe, feel free to ask in the comments below. I’m here to help!
Loaded Baked Potato Casserole (Easy Make Ahead Recipe)
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Ingredients
- 3 pounds Russet potatoes, peeled and cut into 1 and 1/2 inch pieces
- 3/4 cup milk, 1%
- 4 tablespoons butter, melted
- 1 cup sour cream
- kosher salt and pepper, to taste
- 2 tablespoons salt
- 1 2/3 cups cheddar cheese, shredded, divided use
- 1/2 cup cooked bacon, crumbled
- 1/4 cup chives, finely chopped
- 2 tablespoons parsley, finely chopped
- cooking spray
Instructions
Cook the Potatoes
- Bring a large pot of water to a boil and add 2 tablespoons of salt.2 tablespoons salt
- Add the potatoes and boil until tender, about 15 to 20 minutes.3 pounds Russet potatoes
- Drain the potatoes, then return them to the pot.
Mash the Potatoes
- Add the milk, melted butter, sour cream, and salt and pepper to taste to the pot.3/4 cup milk, 4 tablespoons butter, 1 cup sour cream, kosher salt and pepper
- Mash with a potato masher or electric mixer until smooth.
- Stir in 1 cup of the shredded cheddar cheese.1 2/3 cups cheddar cheese
Assemble the Casserole
- Preheat the oven to 350 degrees Fahrenheit.
- Coat a 9 inch square pan or 2 quart casserole dish with cooking spray.cooking spray
- Transfer the mashed potatoes to the dish and spread evenly.
- Top with the remaining 2/3 cup of shredded cheddar cheese.
Bake
- Cover the dish with foil and bake for 20 minutes.
- Remove the foil, sprinkle the bacon over the top, and return to the oven.1/2 cup cooked bacon
- Bake uncovered for an additional 20 minutes, until the cheese is bubbly and the potatoes are heated through.
Finish and Serve
- Sprinkle the chives and parsley over the top.1/4 cup chives, 2 tablespoons parsley
- Serve immediately.
Gina’s Notes and Tips
- Store leftovers in an airtight container in the refrigerator for 3 to 4 days.
- Reheat single servings in the microwave until steaming, or warm a larger portion in a 350°F (175°C) oven, covered with foil, for about 15 to 20 minutes.
