Creamy Slow Cooker Mashed Potatoes

Ingredients

• 2.27 kg (5 lb)potatoes, peeled and cut into 4 cm pieces
• 240 ml (1 cup)chicken stock
• 76 g (⅓ cup)butter, diced
• 4 clovesgarlic, crushed or minced
• 1 pinchsalt, plus more to taste
• 160 ml (⅔ cup)sour cream
• 80–120 ml (⅓–½ cup)hot milk
• 50 g (½ cup)freshly grated Parmesan, optional; or cheddar
• 1 pinchpepper, to taste

Instructions

1. 1

   Prepare the slow cooker

   Grease the insert of a 5.7-litre (6-quart) or larger slow cooker. Add the potato pieces, chicken stock, diced butter, garlic and a pinch of salt.

2. 2

   Cook the potatoes

   Cover and cook on HIGH for 3–4 hours or on LOW for 6–7 hours.

3. 3

   Check for tenderness

   Pierce a few potato pieces with a fork. They should slide off with no resistance; if they are still firm, cook for another 30 minutes.

4. 4

   Keep the cooking liquid

   The stock will have reduced and holds starch and flavour that help give the potatoes their texture, so do not drain it.

5. 5

   Add the dairy

   Add the sour cream and hot milk directly to the pot with the potatoes and remaining liquid.

6. 6

   Mash until smooth

   Mash the potatoes in the pot with a hand masher or ricer until smooth and combined.

7. 7

   Season and serve

   Taste and add salt and pepper as needed. If the potatoes are thicker than you like, stir in a little warm milk. Garnish with fresh chives or parsley and serve warm.

What are slow cooker mashed potatoes?

Mashed potatoes are a familiar American side dish made by cooking potatoes until tender and mashing them with dairy and seasoning. This version uses a slow cooker to soften the potatoes in stock, butter and garlic before they are mashed.

The slow cooker keeps the process largely hands-off, while sour cream, milk and Parmesan make the finished mash creamy and savoury.

Nutrition and macros by portion

The nutrition label shows one serving as written: 335 calories, 9g protein, 54g carbs, 10g fat.

The potatoes provide most of the carbohydrates, while butter, sour cream and milk contribute much of the fat. Chicken stock, sour cream and Parmesan contribute some protein, with the cheese also adding flavour. Balance a serving with vegetables and a protein-rich main.

Choose potatoes that mash well

Potato choice: Floury or all-purpose potatoes break down readily and make a soft, fluffy mash. Cut them into evenly sized pieces so they become tender at roughly the same time.

Garlic: Crushed or minced garlic cooks alongside the potatoes, allowing its flavour to mellow into the stock and butter.

Keep the cooking liquid

Reduced stock: The method relies on the small amount of chicken stock remaining in the pot after cooking. It carries flavour and potato starch, so leave it in when adding the dairy rather than draining the potatoes.

Stock choice: Chicken stock gives the mash a savoury base. Choose a suitable stock and adjust the added salt at the end, since stock can vary in saltiness.

Know when the potatoes are ready

Fork test: Pierce several pieces, including some from different parts of the pot. They should slide off the fork without resistance; if they feel firm, give them the extra 30 minutes specified in the method.

Cooking time: The recipe allows 3–4 hours on HIGH or 6–7 hours on LOW. Slow cookers differ, so use tenderness rather than the clock alone to judge doneness.

Mash to the texture you like

Mashing: A hand masher leaves a little more texture, while a ricer produces a finer, smoother result. Mash in the slow cooker so the potatoes combine with the stock left in the pot.

Adjusting: Add the hot milk gradually within the stated range. If the mash still seems too thick, the method suggests adding a small splash of warm milk.

Finish with dairy and seasoning

Sour cream and milk: These bring creaminess and help loosen the potatoes. Use hot milk as directed so it blends readily into the warm mash.

Parmesan: The grated cheese is optional and adds a savoury finish; cheddar is offered as an alternative. Taste before adding more salt, then season with pepper as desired.

Serve alongside a main

Serving: These potatoes work well with roast chicken, beef or a meat-free main, along with vegetables for a fuller plate. Chives or parsley can be used as the suggested fresh garnish.

Timing: The potatoes are best served warm after mashing. If making them for a meal, coordinate the slow-cooker cooking window with the rest of the dishes.

Recipe notes & tips

• Cut the potatoes into similarly sized pieces so they cook evenly.
• Use a slow cooker of at least 5.7 litres (6 quarts) as specified.
• Test more than one potato piece before deciding the batch is tender.
• Do not pour away the reduced stock before mashing.
• Add the hot milk gradually to control the final consistency.
• Taste before adding extra salt, especially if your stock is well seasoned.

Variations

• Use cheddar: Swap the optional Parmesan for grated cheddar.
• Skip the cheese: Leave out the optional Parmesan for a simpler finish.
• Add fresh herbs: Garnish the warm potatoes with the suggested chives or parsley.
• Choose lighter dairy: Use light sour cream and skimmed or 2% milk as noted in the ingredient list.
• Adjust the garlic: Use crushed garlic for an even flavour through the mash or minced garlic for a more pronounced presence.

Common mistakes to avoid

• Draining the stock: The reduced liquid adds starch and flavour, so keep it in the pot for mashing.
• Stopping while potatoes are firm: Continue cooking for 30 minutes, then test again until a fork slides through easily.
• Adding all the milk at once: Start with the lower amount and add more as needed to avoid making the mash too loose.
• Cutting uneven pieces: Make the chunks a similar size so smaller ones do not turn soft long before larger ones.
• Over-seasoning early: Stock and Parmesan can be salty, so taste the finished mash before adding more salt.

How to store

Refrigerate leftovers in a covered container for up to 3 days. Reheat gently in a saucepan or microwave, stirring in a little milk if the potatoes have thickened; heat until piping hot.

Frequently asked questions