Loaded Twice Baked Potato Casserole for the Holidays

This twice baked potato casserole gives you everything people love about stuffed baked potatoes, without filling a dozen potato skins one by one. Fluffy oven-baked russets are mashed with butter, sour cream, cream cheese and sharp cheddar, then topped with more cheese, crispy bacon and green onions and baked until bubbly. It is rich, cozy and exactly the kind of side dish that disappears first at a holiday dinner.

In this post I walk you through why baking the potatoes first matters, the ingredients, the step-by-step method, a Thanksgiving make-ahead timeline, tips, variations, common mistakes and storage. The printable recipe card with exact measurements and estimated nutrition is waiting at the bottom of the post.

Why This Twice Baked Potato Casserole Works

Classic twice baked potatoes are wonderful, but scooping, filling and baking individual skins takes time you rarely have on a holiday. This casserole keeps the same flavor and texture and puts it all in one dish that scoops beautifully onto a crowded plate.

• Baked, not boiled, potatoes. Baking the russets whole dries out the flesh slightly, so it soaks up butter and sour cream and turns fluffy instead of gluey.
• Cream cheese for body. A few ounces of cream cheese keeps the mash rich and creamy, even after a night in the fridge.
• Sour cream for tang. It gives the casserole that loaded baked potato flavor and keeps every bite light.
• Cheese inside and on top. Cheddar is folded into the potatoes and melted over the top for a golden, bubbly finish.
• Bacon and green onions. Salty, crispy bacon and fresh scallions make it taste like a fully loaded potato.

It is also one of the most forgiving sides you can make for a holiday. The potatoes can be baked and mashed a day ahead, the dish reheats well, and it happily shares an oven with stuffing or a green bean casserole.

Think of it as the middle ground between mashed potatoes and a potato gratin. It is creamier and more indulgent than plain mashed potatoes, but far less fussy than layering thin slices for a gratin.

Ingredients You Will Need

You need simple, everyday ingredients for this loaded potato casserole. Here is what each one does.

• Russet potatoes: About 5 pounds (2.3 kg), roughly 8 medium potatoes. Their starchy, dry flesh bakes up light and fluffy.
• Butter: Half a cup, softened, for richness. I use salted butter and adjust the salt at the end.
• Sour cream: One and a half cups of full-fat sour cream for that classic loaded potato tang.
• Cream cheese: Four ounces, softened, for a velvety, make-ahead friendly texture.
• Milk: About half a cup of whole milk, added a splash at a time until the mash is creamy.
• Sharp cheddar: Three cups shredded, divided between the filling and the topping. Shred it yourself for the smoothest melt.
• Bacon: Ten slices, cooked crisp and crumbled.
• Green onions: Five or six, thinly sliced, plus extra for garnish.
• Seasoning: Garlic powder, salt and freshly ground black pepper.

If you love a bit of kick, you can swap half the cheddar for pepper jack. For a milder, creamier version, use a mix of cheddar and Monterey Jack.

How to Make Twice Baked Potato Casserole

Preheat the oven to 400°F (200°C). Scrub the potatoes, pat them dry and prick each one a few times with a fork.

1. Bake the potatoes. Set the potatoes directly on the oven rack and bake for 55 to 65 minutes, until a knife slides easily into the center.
2. Cook the bacon. While the potatoes bake, cook the bacon until crisp, drain it on paper towels and crumble it.
3. Cool slightly. Let the potatoes cool for about 10 minutes, just until you can handle them with a kitchen towel.
4. Scoop and mash. Halve the potatoes, scoop the flesh into a large bowl and discard the skins or save them for another use. Mash with the butter and cream cheese until smooth.
5. Add the dairy and seasoning. Stir in the sour cream, garlic powder, salt and pepper, then add milk a little at a time until creamy.
6. Fold in the extras. Fold in 2 cups of cheddar, two-thirds of the bacon and the green onions. Taste and adjust the seasoning.
7. Bake again. Lower the oven to 350°F (175°C). Spread the potatoes in a greased 9×13-inch dish, top with the remaining cheese and bacon and bake for 25 to 30 minutes, until hot and bubbly at the edges.

The casserole is ready when the cheese has melted completely, the edges are bubbling and the center is hot all the way through. Let it stand for 5 minutes, then sprinkle with fresh green onions and serve.

If you are baking it straight from the refrigerator, cover the dish with foil for the first 20 minutes, then uncover and bake another 20 to 25 minutes so the top can brown without the middle staying cold.

Holiday Make-Ahead Timeline

Thanksgiving falls on Thursday, November 26, 2026, and Christmas is on Friday, December 25. Oven space is precious on both days, so this is how I plan my make ahead potato casserole.

Because the second bake happens at 350°F (175°C), this casserole can slide into the oven while the turkey rests, which frees up the oven exactly when you need it most.

Choosing the Best Potatoes for a Potato Casserole

The potato you pick makes a bigger difference here than any other ingredient. Russets are high in starch and low in moisture, so they bake up dry and fluffy and then drink in the butter, sour cream and cheese. That is exactly the texture you want in a twice baked potato.

Yukon Gold potatoes are creamier and naturally buttery, and they can work if you mash them gently, but the casserole will be denser. Red potatoes are waxy and best saved for roasting or potato salad. Look for russets that are firm, similar in size and free of green patches or sprouts so they all finish baking at the same time.

Tips for the Best Loaded Potato Casserole

• Choose russets. Waxy potatoes like red or Yukon Gold can turn gluey when mashed this much. Russets stay fluffy.
• Do not use a blender or mixer on high. Overworking releases starch and makes the potatoes sticky. A hand masher or a mixer on low is best.
• Shred your own cheese. Bagged cheese has anti-caking agents that keep it from melting smoothly.
• Season boldly. Potatoes need more salt than you think. Taste before you spread them in the dish.
• Save some bacon for the top. Bacon folded into the potatoes softens, while bacon on top stays crisp.

Building a holiday menu? This casserole is lovely next to a honey glazed ham or a juicy slow cooker turkey breast, with maple roasted root vegetables for color. If you prefer something simpler, my creamy garlic mashed potatoes are a classic, and you will find many more ideas in my side dish recipes.

Easy Variations

• Ranch style: Stir 1 tablespoon of dry ranch seasoning into the potatoes instead of the garlic powder.
• Broccoli cheddar: Fold in 2 cups of finely chopped steamed broccoli for a little green.
• Vegetarian: Skip the bacon and add sautéed mushrooms or extra chives, plus a pinch of smoked paprika.
• Jalapeño popper: Add 2 seeded, diced jalapeños and use pepper jack on top.
• Smaller crowd: Halve the recipe and bake it in an 8×8-inch dish for 20 to 25 minutes.
• Individual cups: Scoop the filling into greased muffin cups, top with cheese and bake for 15 to 18 minutes for party-sized portions.

All of these use the same base, so you can easily split a batch into two smaller dishes and offer two flavors on a holiday buffet.

Common Mistakes and How to Fix Them

Here are the most common problems with a twice baked potato casserole and how to avoid them.

Make Ahead, Storage and Reheating

Assemble the casserole up to 24 hours ahead, cover it tightly and refrigerate it. Bake it as directed, adding about 15 minutes and starting with foil on top so it heats evenly.

Refrigerate leftovers within 2 hours in an airtight container for up to 4 days. Reheat portions in the microwave or the whole dish covered at 350°F (175°C) until it reaches 165°F (74°C) in the center. The USDA has a helpful guide to handling leftovers safely.

To freeze, assemble the casserole without the cheese topping, wrap it well and freeze for up to 2 months. Thaw it overnight in the refrigerator, add the topping and bake. The texture stays creamy thanks to the cream cheese and sour cream.

Frequently Asked Questions

Ready to cook? Here is the full printable twice baked potato casserole recipe with exact measurements and estimated nutrition.

Twice Baked Potato Casserole

Fluffy baked russet potatoes mashed with butter, sour cream, cream cheese and cheddar, loaded with bacon and green onions and baked until bubbly.

Print Recipe Pin Recipe

Prep Time 25 minutes mins

Cook Time 1 hour hr 30 minutes mins

cooling 10 minutes mins

Total Time 2 hours hrs 5 minutes mins

Servings: 12 servings

Course: Side Dish

Cuisine: American

Calories: 380

Ingredients Method Notes

Ingredients

  

• 5 pounds russet potatoes about 8 medium (2.3 kg)
• 10 slices bacon cooked crisp and crumbled, divided
• 1/2 cup salted butter softened (113 g)
• 4 ounces cream cheese softened (113 g)
• 1 1/2 cups sour cream full fat (360 g)
• 1/2 cup whole milk plus more as needed (120 ml)
• 1 teaspoon garlic powder
• 1 1/2 teaspoons kosher salt or to taste
• 1/2 teaspoon black pepper freshly ground
• 3 cups sharp cheddar cheese shredded, divided (340 g)
• 6 green onions thinly sliced, plus more for garnish

Method

 

1. Preheat the oven to 400°F (200°C). Scrub and dry the potatoes, prick them with a fork and bake directly on the rack for 55 to 65 minutes, until tender.
2. Meanwhile, cook the bacon until crisp, drain on paper towels and crumble.
3. Let the potatoes cool for 10 minutes, then halve them and scoop the flesh into a large bowl.
4. Mash the hot potatoes with the butter and cream cheese until smooth.
5. Stir in the sour cream, garlic powder, salt and pepper, then add milk a little at a time until creamy.
6. Fold in 2 cups of cheddar, two-thirds of the bacon and the green onions. Taste and adjust the seasoning.
7. Reduce the oven to 350°F (175°C). Spread the potatoes in a greased 9×13-inch dish and top with the remaining cheddar and bacon.
8. Bake for 25 to 30 minutes, until hot and bubbly. Rest for 5 minutes, garnish with green onions and serve.

Notes

Make ahead: Assemble up to 24 hours ahead and refrigerate. Bake covered for 20 minutes, then uncovered for 20 to 25 minutes.

Freezing: Freeze unbaked without the topping for up to 2 months and thaw overnight before baking.

Nutrition is an estimate per serving.

I hope this cheesy, comforting casserole becomes a holiday favorite at your house. If you make it, please leave a comment and a star rating below and tell me which toppings you added. Happy cooking, friends!