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A close up shot of twice baked potato casserole topped with cheese, bacon bits and green onions.

Twice Baked Potato Casserole

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  • Author: The Cooking Jar
  • Total Time: 1 hour 25 minutes
  • Yield: 8 1x


Twice baked potato casserole with loaded mashed potatoes and a cheesy top has all the flavors of a twice baked potato in easy casserole form.


Units Scale
  • 8 medium russet potatoes, scrubbed and dried
  • 4 tablespoons butter
  • 1 cup milk / heavy cream
  • 4 oz. cream cheese, softened
  • 8 oz. sour cream
  • 12 oz. thick-cut bacon, cooked, crumbled and divided
  • 2 cups cheddar cheese, shredded and divided
  • 4 green onions, sliced and divided
  • 1 teaspoon garlic powder
  • Salt and pepper to taste


  1. [If baking potatoes to make twice baked potato casserole] Preheat oven to 425°F. Prick the potatoes about 8 times with a fork, baste them with some olive oil and season with salt and pepper. Bake on a prepared baking sheet for 45-60 minutes or until fork-tender. Cut potatoes in half lengthwise and scoop out the mash. Chop up some skin if desired to add to the loaded mash.
  2. [If boiling potatoes to make regular baked potato casserole] Peel and chop potatoes. Over medium-high heat, bring a large pot of salted water to a boil and cook the potatoes until fork tender, about 15-20 minutes.
  3. Transfer potatoes to a large mixing bowl, add butter, cream cheese, sour cream, 3/4 of the crumbled bacon, 1 cup cheddar cheese, garlic powder and 1/2 the green onions.
  4. Mash potatoes while drizzling in milk a little bit at a time until they reach the desired consistency. Season with salt and pepper to taste.
  5. Transfer to a 9×13 casserole dish and sprinkle with leftover crumbled bacon, the remaining 1 cup of cheddar cheese and sliced green onions.
  6. Bake uncovered at 350°F for 30 minutes or until cheese has melted.
  7. Dish and serve warm.
  8. Enjoy!


  • Add more protein – Load it up some more with some chopped cooked ham.
  • Swap cheeses – Try a different cheese such as Colby Jack, Pepper Jack, Monterey Jack or a combination of cheddar and mozzarella for epic cheese strings.
  • Scroll up to RECIPE TIPS for more useful tips, suggestions and ingredient substitutions.
  • Prep Time: 10 mins
  • Cook Time: 1 hour 15 mins