Mashed Potato Casserole featured image
Mashed potato casserole makes the creamiest, cheesiest, most delicious mashed potatoes ever! They are easy to put together and make a wonderful side dish!
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Table of Contents
  1. Make-Ahead Mashed Potato Casserole Recipe
  2. Ingredients
  3. Substitutions & Additions
  4. How to Make Mashed Potato Casserole Recipe
  5. Tips
  6. More Easy Side Dish Recipes
  7. Mashed Potato Casserole Recipe

Mashed potato casserole makes the creamiest, cheesiest, most delicious mashed potatoes ever! If you are a mashed potato fan, then you do not want to miss out on these.

They are easy to put together and make a wonderful side dish to any meal and perfect for holiday dinners when cooking for a crowd.

mashed potato casserole

Make-Ahead Mashed Potato Casserole Recipe

I always have a bag of potatoes at home. Potatoes are pretty much the ultimate side dish because they can be made in so many different ways. One of my favorite ways to make them is mashed potato casserole.

This oven-baked casserole is really simple, and it’s a perfect way to spice things up from just your basic mashed potatoes. I like to think of it as loaded baked potatoes in a casserole dish. It can even be doctored up with any number of toppings that you might add to a baked potato.

This is the perfect dish to bring to your next potluck or gathering and the perfect way to change things up for Thanksgiving dinner. We love that it is a make-ahead side dish so you don’t need to fuss with it while entertaining.

No matter what you’re making them for, this dish is sure to be loved by all. You simply can’t beat the creamy, flavorful mashed potatoes.

mashed potato casserole scooped out using wooden spoon

Ingredients

  • Yukon Gold Potatoes
  • Cold water
  • Salt
  • Salted butter
  • Sour cream
  • Whole milk
  • Garlic powder
  • Ground white pepper
  • Salt
  • Chives
  • Bacon
  • Cheddar cheese

Substitutions & Additions

Potatoes: I like to use Yukon Gold potatoes in this recipe, but you can use any type of potatoes. I have used russet potatoes as well as red potatoes in this recipe and they turned out great.

Pepper: You can use ground black pepper in place of the ground white pepper.

Toppings: As mentioned above, this casserole can be topped off with pretty much anything you might put on a baked potato! Some of my favorite toppings are extra sour cream, bacon, chives, ham, broccoli, or cheese.

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How to Make Mashed Potato Casserole Recipe

In a large pot add potatoes and cover with cold water.
Add salt into water and place on the stove over medium-high heat. Bring water to boil and cook for 18-22 minutes.
Drain potatoes and place in a large mixing bowl. Add butter, garlic powder, white pepper, and salt. Mix on high for 30 seconds with a hand mixer.

mashed potato mixed with butter, garlic powder, white pepper

Add sour cream, warm milk, and ½ cheddar cheese. Beat on high until no lumps remain.

mashed potato mixed with sour cream, warm milk, and ½ cheddar cheese

Lightly grease 9×13 dish and preheat the oven to 375. Add potato mixture to dish.

potato mixture added to baking dish

Top with remaining cheese. Place in the oven and bake for 20 minutes.

potato mixture in the baking dish topped with cheese

Sprinkle bacon and chives on top and serve!

mashed potato casserole topped with bacon and chives

Tips

Tip 1: Make sure not to overmix your potatoes. They will become gluey and tough if they are mixed for too long.

Tip 2: The purpose of warming the milk is so that you don’t bring down the temperature of the potatoes when mixing together.

Tip 3: It’s best to let the sour cream sit out while the potatoes are cooking so that it can come up to room temperature before adding it to your hot potatoes.

Tip 4: You can make this dish ahead of time and then when you’re ready to eat it, just pop it back into the oven to heat it up!

mashed potato casserole

More Easy Side Dish Recipes

Roasted Cauliflower Popcorn | Mexican Corn Salad (Street Corn) | Air Fryer French Fries {Crispy & Healthy!} | Better Than Takeout Fried Rice | Easy Baked Beans | KFC Coleslaw (Copycat) | Scalloped Potatoes

5 from 1 vote
Mashed Potato Casserole featured image

Mashed Potato Casserole

Serves — 10
Mashed potato casserole makes the creamiest, cheesiest, most delicious mashed potatoes ever! They are easy to put together and make a wonderful side dish!
Prep Time 45 mins
Cook Time 20 mins
Total Time 1 hr 5 mins

Ingredients
  

  • 5 lbs Yukon Gold Potatoes peeled and cut into quarters
  • Cold water to cover potatoes
  • ½ tsp salt
  • 1 stick salted butter softened
  • ½ cup sour cream
  • ½ cup whole milk warmed in the microwave for 45 seconds.
  • ½ tsp garlic powder
  • ½ tsp ground white pepper
  • 1 ½ tsp salt
  • Chives finely chopped
  • 10 strips bacon cooked and crumbled
  • 3 cups cheddar cheese divided in half

Instructions
 

  • In a large pot add quartered Yukon Gold Potatoes. Cover with cold water and place on the stovetop over medium-high heat. Add ½ tsp salt and stir into water. Bring water to a boil and let potatoes cook for 18-22 minutes (depending on the size of your cut potatoes). Potatoes are done when you can easily pierce with a fork.
  • Drain potatoes and place them in a large mixing bowl. Using a hand mixer with beaters, break the potatoes up in the bowl. Add 1 stick of softened butter, garlic powder, ground white pepper, and salt. Mix with a hand mixer for 30 seconds on high.
  • Add sour cream, warmed milk, and ½ of the cheddar cheese to the bowl. Beat on high until no lumps remain in potatoes.
  • Lightly grease a 9×13 baking dish and preheat the oven to 375 degrees F. Add potato mixture to the baking dish. Top with remaining cheddar cheese. Place in the oven and bake for 20 minutes, or until cheese is fully melted.
  • Sprinkle cooked bacon and chives on the top of the casserole. Serve and enjoy.

Jenn’s Notes

Make sure not to overmix your potatoes. They will become gluey and tough if mixed too long.
The purpose for warming the milk is so that you don’t bring down the temperature of the potatoes while mixing together.
I recommend that you let the sour cream sit out while the potatoes are cooking so that it can come up to room temperature before adding to your hot potatoes.
Ground black pepper can be used in place of the ground white pepper.

Nutrition Info

Calories: 514kcal | Carbohydrates: 41g | Protein: 17g | Fat: 32g | Saturated Fat: 17g | Cholesterol: 82mg | Sodium: 930mg | Potassium: 1064mg | Fiber: 5g | Sugar: 3g | Vitamin A: 722IU | Vitamin C: 45mg | Calcium: 302mg | Iron: 2mg

Next time you’re wondering what to do with your potatoes at home, you have got to give this mashed potato casserole a try! It’s so easy to put together and makes the creamiest mashed potatoes. It’s the perfect side dish for any meal.

Jennifer Fishkind

About Jenn

Jenn is a mom to three beautiful boys, wife to an amazing husband, social influencer and blogger. I love all things easy recipes, easy crafts, all things hacks, traveling EVERYWHERE and feeding my Pinterest addiction!

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