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5 from 10 votes
Vertical picture of slow cooker mashed potatoes in a white dish
Slow Cooker Buttermilk Mashed Potatoes
Prep Time
30 mins
Cook Time
4 hrs
Total Time
4 hrs 30 mins

The easiest and most delicious mashed potatoes ever with no last minute fussing! Make them up to two days in advance!

Course: Side Dish
Servings: 10
Calories: 214 kcal
Author: Chris Scheuer
  • 5 pounds golden potatoes such as Yukon Gold, peeled and cut into 2-inch pieces
  • 2 medium cloves garlic (optional)
  • 4 cups low sodium chicken broth
  • 2 cups water
  • 4 tablespoons butter
  • ¾ cup buttermilk
  • ½-1 cup milk or half and half
  • 1 teaspoon kosher salt more to taste
  1. Place peeled potatoes, garlic (if using), chicken broth and water in the slow cooker. Cover and cook on high for 2-4 hours (depending on how fast your slow cooker cooks). You want the potatoes to be very tender (just about falling apart).
  2. Drain well in a strainer and shake the strainer a few times to remove excess liquid. Return to slow cooker. Lower setting to Lo, but do not turn slow cooker off.

  3. Allow to sit, uncovered for 2 minutes, then add butter, buttermilk, ½ cup milk and 1 teaspoon salt. Mash well with a potato masher. Add more milk as needed to make a nice creamy, but scoop-able consistency. Taste and add more salt, if need.
  4. Serve immediately or hold in slow cooker till ready to serve. Potatoes will keep well for 2-3 hours on warm setting of slow cooker. Just before serving, stir and add more milk if needed for desired consistency
  5. To make ahead, follow directions 1-3 above. Allow to cool then transfer to a storage container and refrigerate for 1-2 days. To rewarm, transfer potatoes to slow cooker at least one hour before serving. Add ½ cup milk and and adjust heat to low. Allow to warm for one hour or more. Stir well and add more milk if needed to reach desired consistency.
Recipe Notes

See Café Tips above in post for extra instructions and tips.

Nutrition Facts
Slow Cooker Buttermilk Mashed Potatoes
Amount Per Serving
Calories 214 Calories from Fat 63
% Daily Value*
Fat 7g11%
Saturated Fat 4g25%
Cholesterol 18mg6%
Sodium 349mg15%
Potassium 1057mg30%
Carbohydrates 30g10%
Fiber 5g21%
Sugar 1g1%
Protein 8g16%
Vitamin A 215IU4%
Vitamin C 26.2mg32%
Calcium 109mg11%
Iron 7.5mg42%
* Percent Daily Values are based on a 2000 calorie diet.