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Twice Baked Potato Casserole – A Favorite Side Dish Recipe

This recipe contains all the flavors of a traditional twice baked potato, but in an easy to make, easy to eat casserole. It makes a great addition to any potluck or holiday gathering.

I first made this recipe when I was gifted a bunch of leftover baked potatoes. We had attended a Cowboy dinner which consisted of steak, baked potatoes, and cowboy beans.

twice baked potato casserole
A great way to jazz up a side dish of potatoes is to make this twice baked potato casserole.

After dinner we sat around the campfire enjoying the company of both friends and strangers. And as we got up to leave, the host of the cookout asked if we would take home some leftovers.

Not wanting anything to go to waste, I agreed to take home a doggy bag. I figured I could heat up the meal tomorrow for quick and easy lunch.

However, what I didn’t realize was that I was going to be given a dozen baked, potatoes, and several containers of steak and beans.

So the next day, I had to get creative on what to make with each item that I was gifted. Therefore, I decided to make steak fajitas and French Dip Sandwiches with the leftover steak.

Then I froze the beans. Basically, I couldn’t think of anything to do with them at the moment.

baked potatoes in foil
We were thankful for the gift of these baked potatoes. They were the start of one of our favorite side dish recipes!

And finally, I turned some of the baked potatoes into Crispy Home Fries and the remainder were transformed into this Twice Baked Potato Casserole.

Make Ahead and Freeze

Ever since then, I have been asked to make this casserole dish for every potluck and holiday meal. I don’t mind at all because this recipe can be prepared ahead of time. Simply make it and put in the refrigerator for up to two days before you are ready to bake it!

It has become a huge time saver when the holiday cooking rush is in full force!

fresh baked potatoes
You can bake your potatoes in the oven, microwave or air fryer. Just be sure to cook them until they are fork tender.

Twice Baked Potato Casserole

Although I used leftover baked potatoes the first time I made this recipe, it is best to use fresh baked potatoes. The baked potatoes can be made in the oven, Air Fryer, or even in the microwave.

As the potatoes are cooking, fry the bacon. I prefer to pre-cut the bacon before frying so that it requires less time. And less time in a hot skillet means less splattering and therefore, less clean up!

bacon crumbled
Bacon ends cooked down and crumbled to be used in this twice baked potato casserole.

Once the potatoes are fork tender, let them cool just enough so that they can be handled. Then remove the skins of all but two of the potatoes.

Next cut each potato into 4-8 sections. Place the potatoes in a large bowl and add the butter, sour cream and milk. However, be sure that the dairy products are at room temperature.

If you add cold dairy products to hot potatoes, the starches will bind together, leaving you with lumpy potatoes.

twice baked potato casserole
The potatoes are cut into pieces and put in a large bowl with the other ingredients.

Now add 1 cup of the shredded cheese and seasonings to the bowl. Use a potato smasher to mash the Twice Baked Potato Casserole until smooth and creamy.

Then pour the mixture in a 9 x 13 baking dish that has been sprayed with non-stick spray. Spread the potatoes out evenly across the pan.

potato masher
Use a potato masher, not a mixer to make this recipe. Using a mixer for too long will make this casserole pasty.

Next, sprinkle the remaining cheese and bacon crumbles on top.

Bake for 20-25 minutes and then garnish with green onions, if desired.

Make Ahead Baking Instructions

As mentioned before, if you make this Twice Baked Potato Casserole, do not bake it prior to storing it in the refrigerator. When you are ready to bake it, cover and bake for 10-15 minutes to warm it up. Then bake it uncovered for 20-25 minutes before serving.

twice baked casserole
Bake the casserole until the cheese melts Then remove from the oven and let sit for a couple of minutes before serving.


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Yield: 10

Twice Baked Potato Casserole

twice baked potato casserole

All the flavors of a traditional twice baked potato, but in an easy to make, easy to eat casserole. A great addition to any potluck or holiday gathering.


  • ½ pound bacon, precooked and crumbled
  • 8 russet potatoes, medium size, approximately 6 lbs.
  • 3 TBSP olive oil
  • 1/2 cup unsalted butter, room temperature and sliced into cubes.
  • 1 cup sour cream, room temperature
  • 1 cup milk, room temperature
  • 2 cups shredded cheddar cheese, divided
  • 2 tsp. seasoned salt
  • Salt and pepper, to taste


  • 3 green onions, diced


  1. Preheat the oven to 400°F. Spray a 9 x 13 baking dish with non-stick spray and set aside.
  2. Wash and dry the potatoes and poke them with a knife several times. Rub each one with olive oil and place them on a baking sheet and bake for 40 minutes or longer so that you can poke them with the fork easily.
  3. Remove the potatoes from the oven and decrease the heat to 350°F.
  4. Leave the skins on two of the potatoes. When cool enough to handle peel the remaining potatoes. Cut each potato into four sections and add them to a large mixing bowl.
  5. Add 3/4ths of the cooked and crumbled bacon to the potatoes and set the rest aside for the topping.
  6. Add the butter, sour cream, milk, 1 cup grated cheese, seasoned salt, salt and pepper to the bowl and smash with a potato smasher until well combined and creamy.
  7. Top the casserole with remaining bacon and 1 cup of shredded cheese.
  8. Bake, uncovered, for 20-25 minutes. Garnish with sliced green onions and serve!


This recipe can be made 2 days in advance (without the final baking) and stored in the refrigerator. Leftovers can be refrigerated or frozen.

Recipe provided by Make Your Meals

Nutrition Information:



Serving Size:

1 grams

Amount Per Serving: Calories: 608Total Fat: 49gSaturated Fat: 23gUnsaturated Fat: 0gCholesterol: 84mgSodium: 596mgCarbohydrates: 33gFiber: 2gSugar: 3gProtein: 11g
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