Cheddar Mashed Potatoes

Treat yourself to a shortcut this Thanksgiving with an easy, cheesy mashed potato recipe.

cheddar mashed potatoes

Christopher Testani

Prep Time:
15 mins
Total Time:
15 mins

Upgrade store-bought mashed potatoes and save yourself time on Thanksgiving (or any day of the year, really). This trick couldn't be simpler: everything gets combined in one pot until the cheese is melted and the potatoes are creamy. Whole-grain mustard is a surprising flavor upgrade, and sour cream adds a subtle tang. Choose sharp white Cheddar for a rich and decadent flavor, or try Gruyere for a nutty, French rendition. Don’t forget to douse the potatoes with melted butter before serving.


  • 3 to 3 1/2 pounds prepared mashed potatoes

  • 8 ounces sharp white cheddar cheese, shredded (about 2 cups)

  • 1 cup sour cream

  • 3 tablespoons whole-grain mustard

  • Kosher salt (optional)

  • 2 tablespoons unsalted butter, melted


  1. Combine mashed potatoes, cheese, sour cream, and mustard in a large pot over medium-low. Cook, stirring often, until potatoes are warmed through and cheese is melted, 10 to 15 minutes. Season with salt, if desired. Serve topped with melted butter.

Make Ahead

Prepare the recipe up to 2 days in advance. Reheat on the stove or in a slow cooker before dinner.

Nutrition Facts (per serving)

439 Calories
27g Fat
38g Carbs
12g Protein
Nutrition Facts
Servings Per Recipe 8
Calories 439
% Daily Value *
Total Fat 27g 35%
Saturated Fat 12g 58%
Cholesterol 55mg 18%
Sodium 1198mg 52%
Total Carbohydrate 38g 14%
Dietary Fiber 4g 15%
Total Sugars 4g
Protein 12g
Vitamin C 21mg 106%
Calcium 292mg 22%
Iron 1mg 6%
Potassium 753mg 16%

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

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