Mama's Famous Cheesy Mashed Potato Casserole

Mashed Potato

Mama's Famous Cheesy Mashed Potato Casserole

Mama's Famous Cheesy Mashed Potato Casserole
  • PREP TIME
    25 mins
  • COOK TIME
    1 hrs 5 mins
  • TOTAL TIME
    1 hrs 30 mins
  • SERVING
    10 People
  • VIEWS
    14

Indulge in the ultimate comfort food with this luxuriously cheesy mashed potato casserole. A harmonious blend of creamy textures and sharp, savory flavors, it's destined to become a family favorite.

Ingridients

Adjust Servings

Nutrition

  • Carbohydrate
    42 g
  • Cholesterol
    69 mg
  • Fiber
    5 g
  • Protein
    11 g
  • Saturated Fat
    16 g
  • Sodium
    507 mg
  • Sugar
    2 g
  • Fat
    25 g
  • Unsaturated Fat
    0 g

Follow The Directions

01

Step
20 mins

Place the cubed potatoes in a large pot and cover with cold, generously salted water. Bring to a boil over high heat, then reduce heat to medium-low and simmer until the potatoes are fork-tender, approximately 15-20 minutes.

02

Step
5 mins

While the potatoes are cooking, preheat your oven to 350°F (175°C). Ensure the oven rack is in the middle position.

03

Step
2 mins

Once the potatoes are tender, drain them thoroughly using a colander. Return the drained potatoes to the pot.

04

Step
5 mins

Using a potato masher or an electric mixer, mash the potatoes until smooth. Gradually add the sour cream and melted butter, mixing until fully incorporated.

05

Step
5 mins

Add the Parmesan cheese, softened cream cheese, shredded Cheddar cheese, and sliced green onions. Season with salt and pepper to taste. Continue to mix until all ingredients are evenly distributed and the mixture is creamy and well-blended.

06

Step
45 mins

Transfer the mashed potato mixture to a 3-quart casserole dish, spreading it evenly. Bake in the preheated oven for 45 minutes, or until the top is golden brown and the casserole is heated through and bubbly.

07

Step
10 mins

Remove the casserole from the oven and let it rest for 5-10 minutes before serving. Serve hot and enjoy!

For an extra layer of flavor, try adding a pinch of garlic powder or onion powder to the mashed potato mixture.
Feel free to experiment with different types of cheese. Gruyere, Monterey Jack, or even a smoked Gouda would be delicious additions.
If you prefer a crispier top, sprinkle some breadcrumbs or crushed crackers over the casserole before baking.
This casserole can be prepared ahead of time. Simply assemble it, cover, and refrigerate for up to 24 hours. Add about 10-15 minutes to the baking time if baking from cold.

Jody Parkerbahringer

Written by

Our recipe authors are passionate food lovers who share thousands of diverse dishes from around the world. They bring daily cooking inspiration with delicious, easy-to-make recipes for every occasion.

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RECIPE REVIEWS

Avarage Rating: 4.5/ 5 ( 4 Ratings)
Total Reviews: (4)

  • Jazlyn Herzog

    Jun 30, 2025

    This recipe is a game-changer! My family devoured it! The cheese combination is perfect.

  • Annabell Roob

    Jun 17, 2025

    The best mashed potato casserole I've ever tasted! The instructions were clear and the results were amazing. I'll be making this again and again.

  • Berniece Balistreri

    Jun 15, 2025

    I tried this recipe with Gruyere cheese as suggested, and it was phenomenal! Thanks for the great tips!

  • Anne Boyle

    Jun 9, 2025

    I've made this for several potlucks, and it's always a hit. Easy to follow and absolutely delicious!

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