Slow Cooker Creamy Mashed Potatoes

These slow cooker creamy mashed potatoes are an easy, affordable comfort-food recipe made with simple pantry ingredients. Tender potatoes cook slowly with water, margarine, and salt, then mash into a smooth, fluffy, and buttery side dish without needing to boil a large pot on the stove.

Perfect for busy weeknights, family dinners, holiday meals, or meal prep, this budget-friendly mashed potato recipe stays warm in the slow cooker until serving time. It is a simple vegetarian side dish that pairs beautifully with chicken, beef, turkey, vegetables, gravy, or eggs.

Why You’ll Love These Slow Cooker Mashed Potatoes

• Easy hands-off cooking: The slow cooker cooks the potatoes while you prepare the rest of your meal.
• Budget-friendly recipe: Potatoes, margarine, water, and salt create a satisfying dish using inexpensive ingredients.
• Creamy and fluffy texture: Keeping a little cooking liquid helps make the mashed potatoes soft and silky.
• Great for serving a crowd: Keep the potatoes warm for up to 2 hours before dinner.
• Versatile side dish: Serve with roasted chicken, meatballs, beef stew, vegetables, or a fried egg.

Servings: 4 to 6
Prep Time: 15 minutes
Cook Time: 3 to 4 hours on HIGH or 6 to 7 hours on LOW

Ingredients

• 3 pounds russet potatoes or other starchy potatoes, peeled and cut into 1-inch chunks
• 1 cup water
• 6 tablespoons margarine, divided, plus extra for serving if desired
• 1¼ teaspoons salt, divided
• Freshly ground black pepper, to taste, optional

Instructions

1. Rinse the peeled and chopped potatoes under cool water, then drain well.
2. Lightly grease the inside of a 4- to 6-quart slow cooker with a small amount of margarine.
3. Add the potatoes to the slow cooker. Pour in the water and sprinkle with ¾ teaspoon of salt.
4. Add 4 tablespoons of margarine over the potatoes. Cover with the lid.
5. Cook on HIGH for 3 to 4 hours or on LOW for 6 to 7 hours, until the potatoes are very tender.
6. Do not drain the cooking liquid. The starchy liquid helps create creamy mashed potatoes.
7. Add the remaining 2 tablespoons of margarine and ½ teaspoon of salt. Mash the potatoes directly in the slow cooker using a potato masher, sturdy spoon, or hand mixer on low speed.
8. If the potatoes are too thick, add hot water one tablespoon at a time until they reach your preferred consistency.
9. Taste and adjust the seasoning. Add black pepper if desired.
10. Serve warm with an extra small spoonful of margarine on top for a rich, comforting finish.

Serving Ideas

Serve these easy slow cooker mashed potatoes with roasted chicken, turkey, beef stew, meatballs, grilled vegetables, green beans, peas, or a simple tomato salad. They are also delicious topped with gravy or served with eggs for a filling breakfast or dinner.

Tips and Variations

For richer mashed potatoes, stir in a splash of milk, evaporated milk, or sour cream after cooking. You can also add shredded cheese, cream cheese, garlic powder, or finely chopped onion for more flavor.

For a dairy-free version, choose a plant-based margarine suitable for cooking. Store leftovers in shallow containers in the refrigerator for up to 3 to 4 days. Reheat until hot, adding a little water and margarine to restore the creamy texture.