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+ servings

Slow Cooker Mashed Potatoes

Prep Time 10 minutes
Cook Time 4 hours
Total Time 4 hours 10 minutes
Servings 6 -8 servings


  • 3 pounds red potatoes sliced into 1-1/2” slices, skin on
  • 1/4 cup unsalted butter, cubed
  • 2 tablespoons prepared pesto
  • 1/4 cup water
  • 4 garlic cloves, minced
  • 1 teaspoon salt
  • 1/4 teaspoon pepper
  • 1/4 teaspoon paprika
  • 1/4 teaspoon onion powder
  • 1/2 cup milk, more or less as desired warmed
  • 1/2 cup sour cream


  • Spray slow cooker with nonstick cooking spray.
  • Add potatoes, butter, pesto, water, garlic and spices to slow cooker. Cook on HIGH for 3-4 hours, or on LOW for 7-8 hours OR until potatoes are very tender.*
  • Add milk and sour cream, and mash with a potato masher or beat with an electric mixer (recommended) just until blended - don't overwork potatoes or they might become gummy.
  • Add additional milk as needed to reach desired consistency. Taste and season with additional salt and pepper if desired.


*Potatoes will require longer cooking time if you have an older slower cooker. *Cooking time will vary depending on potato size.