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Slow Cooker Buttermilk Mashed Potatoes--these are my favorite mashed potatoes. Cubed potatoes are cooked for a few hours in your slow cooker with garlic cloves and bay leaf. Then they're mashed with butter and buttermilk for ultimate creaminess and flavor.

Slow Cooker Buttermilk Mashed Potatoes

  • Prep Time: 10 minutes
  • Cook Time: 4 hours
  • Total Time: 4 hours 10 minutes
  • Yield: 6 servings 1x


Units Scale
  • 3 pounds Russet potatoes (about 6 medium), peeled and cubed
  • 1 1/2 cups water
  • 2 garlic cloves, peeled
  • 1 bay leaf
  • 1 tsp kosher salt
  • 3 tablespoons butter
  • 1/2 cup warmed buttermilk (or you can use 1/4 cup milk and 1/4 cup plain greek yogurt)
  • Salt and pepper to taste


  1. Place potatoes, water, garlic, bay leaf and salt in slow cooker. 
  2. Cover and cook on LOW for 4-6 hours, or until potatoes are tender. 
  3. Drain potatoes and discard the bay leaf. Mash the potatoes with a potato masher or a fork.  Stir in the butter and buttermilk.  Stir in salt and pepper to taste.