Twice-Baked Mashed Potatoes

Oven Baked twice baked mashed potato casserole in a glass baking dish, garnished with green onion and crispy bacon.

4.93 from 14 votes

These easy Twice-Baked Mashed Potatoes are the perfect side dish. They can also be made ahead of time and reheated when you're ready to serve. They're perfect for family dinners or busy weeknights!

Prep Time50

Cook Time30

Total Time1 20

Course: All Recipes, Side Dish

Cuisine: American

Servings: people

Calories: 362kcal

Author: Jeri Walker

Equipment

Casserole dish 9 x 13

Ingredients

5 pounds potatoes washed
8 slices bacon cooked and diced
1 cup milk
1 cup sour cream
½ cup butter cold, cut in cubes
1 teaspoon garlic powder
1 teaspoon onion powder
2 teaspoon seasoning salt
1 cup cheddar cheese shredded, plus more for topping
3 green onions, diced green part only, plus more for topping

Instructions

Preheat the oven to 400℉.
Pierce the potatoes all over with a fork, about 7 or 8 times. Place the potatoes on the top rack in your oven and bake until tender when pierced with a fork. This will take 45 to 60 minutes.
When the potatoes are fully cooked, remove them from the oven and turn the oven down to 350℉. If you want the skins removed, use a sharp knife to cut them off as soon as they are cool enough to handle. If you want the skins on, cut the potatoes into quarters, and place them in a large bowl.
Add cold butter to the potatoes, and mash it in. Next, add sour cream, milk, onion powder, garlic powder, seasoning salt, and black pepper. Stir with a large spoon to combine all the ingredients. Do not overmix. Some small lumps are preferable.
Add the cooked bacon, green onion, and shredded cheese to the bowl with the potatoes, reserving some to use as a topping. Stir just until combined.
Transfer the mixture to a greased 9 x 13 casserole dish. Smooth out the top with the back of a spoon. Sprinkle on the reserved shredded cheese, bacon, and green onion.
Place the casserole back into the oven, and bake for about 30 minutes, until the mixture is heated through and the cheese is melted and bubbly on top. Enjoy!

Video

Notes

Cut and peel the potatoes as soon as they are cool enough to handle.
Add cold butter, not melted butter. It mixes better in the potatoes.
Do not overmix the potatoes, otherwise, they may get a gummy texture.

Make-Ahead Instructions: Follow all of the instructions until you have it in the casserole dish and ready to bake. At this point, you can cover it with plastic wrap and aluminum foil and place it in the refrigerator for up to 2 days.

When you are ready to bake it, remove the plastic wrap, cover it with aluminum foil, and bake for 30 minutes at 350 degrees F. Remove the aluminum foil and continue to bake until the casserole is hot and bubbly.

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