Loading…

When a fork slides through a russet with almost no resistance, you know the potatoes are ready for the part that makes this casserole feel like twice-baked potatoes without all the individual scooping and refilling. I bake them right on the oven rack, then mash the warm centers with sour cream, milk, and butter. With crisp bacon and cheddar folded through and scattered on top, Twice Baked Potato Casserole comes out rich and savory, with bubbling cheese around the edges.

The texture depends on starting with baked russets rather than waterlogged potatoes. Russets turn fluffy in the oven, so the dairy adds creaminess without making the filling loose. I mash just until everything comes together and leave a few small lumps; that keeps the casserole closer to a baked potato than a smooth purée. A little green onion folded into the filling brightens each bite, while the rest goes on after baking.

Why These Russets Go in the Oven, Not a Pot of Water

Baking the potatoes directly on the oven rack is more than a hands-off way to cook them. Russets are starchy and bake up fluffy; dry oven heat keeps them from taking on the extra water they’d absorb if boiled. That matters once sour cream, milk, and butter go into the bowl. The filling should be creamy, but it still needs enough body to hold its shape in the baking dish.

Prick each potato all over with a fork before baking so steam has a way to escape. The timing depends on the size of the potatoes, so use the fork-tender cue rather than pulling them out just because the clock says they’re done. If a fork still meets a firm center, the potato needs more time. Once the flesh is tender, the rest of the casserole comes together without extra liquid or a separate sauce.

Russets, Sharp Cheddar, and the Choices That Shape This Casserole

• Russet potatoes — Their dry, starchy flesh mashes into a fluffy base that can take on sour cream and milk without turning soupy. Scrub them well and prick them all over before baking. Yukon Golds work in a pinch, but they’re waxier and make a denser, less fluffy casserole.
• Bacon — The crumbled pieces bring salty, smoky contrast to the creamy potatoes, so use bacon whose flavor you like on its own. Cook it until crisp, then drain it on paper towels; bacon that’s still soft won’t give the filling the same savory bites.
• Sour cream, milk, and butter — Sour cream brings tang and a thick, creamy texture, while milk loosens the mash and butter rounds it out. If you’re out of sour cream, plain Greek yogurt can replace it one-for-one; the filling will taste a little tangier. Softened butter blends in more easily than cold pieces.
• Sharp cheddar — Its pronounced flavor stands up to the potatoes and bacon, and it melts over the top into a bubbling finish. A block you shred yourself usually melts more evenly, though packaged shredded cheddar works when convenience matters.
• Green onions — Thin slices add a fresh, mild bite against the rich filling. Keep them divided: some go inside for flavor throughout, and the rest are sprinkled on after baking so their color and fresh taste stay bright.

From Fork-Tender Russets to a Bubbling 9-by-13 Pan

Bake the potatoes until a fork slips in easily

Heat the oven to 400°F, prick the russets all over with a fork, and set them directly on the oven rack. Bake for 55–70 minutes, checking for tenderness with a fork; it should pass through the center without a hard spot. Large potatoes may need the longer end of that window. If the center still feels firm, keep baking rather than trying to mash undercooked flesh later.

Crisp the bacon while the potatoes bake

Cook the bacon in a 12-inch skillet over medium heat, turning as needed, for 8–12 minutes. Look for evenly browned slices that feel crisp rather than floppy; they’ll firm up a little more as they drain on paper towels. Crumble the cooled bacon. Reduce the oven to 375°F, then grease a 9×13-inch baking dish with 1 tablespoon of the softened butter.

Mash the warm potato flesh and fold in the filling

When the potatoes are cool enough to handle, halve them lengthwise and scoop the flesh into a 5-quart mixing bowl; discard the skins. Mash with the remaining butter, sour cream, milk, kosher salt, and black pepper until combined, leaving a few small lumps. Fold in 1 cup of cheddar, about two-thirds of the crumbled bacon, and 3 sliced green onions. Stop once those additions are spread through the potato mixture.

Finish with cheddar and bake until the edges bubble

Spread the mixture in the greased dish, then top it with the remaining cheddar and bacon. Bake uncovered at 375°F for 25–30 minutes, until it’s hot throughout and the cheese has melted and bubbled at the edges. If the center hasn’t heated through when the top is bubbling, give it a little longer in the oven. Sprinkle on the remaining green onion and let the casserole rest for 10 minutes before serving.

Two Simple Ways to Change the Bacon-and-Cheddar Balance

The Questions That Come Up While the Potatoes Bake

Twice Baked Potato Casserole

Twice baked potato casserole combines fluffy russet potatoes, crisp bacon, sour cream, and sharp cheddar in a creamy, lightly lumpy bake. It’s baked until hot throughout, with melted cheese bubbling at the edges.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 1 hour hr 30 minutes mins

Resting time 10 minutes mins

Total Time 2 hours hrs

Servings: 8 servings

Course: Side Dish

Cuisine: American

Calories: 390

Ingredients Equipment Method Notes

Ingredients

  

• 3 lb russet potatoes scrubbed
• 6 bacon slices
• 5 tbsp butter softened, divided
• 1 cup sour cream
• 0.5 cup milk
• 1 tsp kosher salt
• 0.25 tsp black pepper
• 1.5 cup cheddar cheese shredded sharp, divided
• 4 green onions thinly sliced, divided

Equipment

• 1 12-inch skillet
• 1 9x13-inch baking dish

Method

 

1. Preheat the oven to 400°F.
2. Prick the potatoes all over with a fork.
3. Bake the potatoes directly on the oven rack for 55–70 minutes, until fork-tender.
4. While the potatoes bake, cook the bacon in a 12-inch skillet over medium heat, turning as needed, until crisp, 8–12 minutes.
5. Drain the bacon on paper towels and crumble it.
6. Reduce the oven temperature to 375°F.
7. Grease a 9x13-inch baking dish with 1 tablespoon of the butter.
8. When the potatoes are cool enough to handle, halve them lengthwise and scoop the flesh into a 5-quart mixing bowl; discard the skins.
9. Mash the potato flesh with the remaining 4 tablespoons butter, sour cream, milk, salt, and pepper until combined, leaving a few small lumps.
10. Fold in 1 cup of the cheddar, about two-thirds of the crumbled bacon, and 3 of the sliced green onions.
11. Spread the potato mixture in the prepared dish.
12. Top with the remaining 1/2 cup cheddar and remaining bacon.
13. Bake uncovered for 25–30 minutes, until hot throughout and the cheese is melted and bubbling at the edges.
14. Sprinkle with the remaining green onion.
15. Let rest for 10 minutes before serving.

Notes

For the creamiest texture, leave a few small lumps when mashing. Refrigerate leftovers for up to 4 days; freeze for up to 2 months. Plain Greek yogurt can replace the sour cream for a lighter option.