When I lift the slow-cooker lid, the garlic has softened into the broth and the potato edges give way easily under a fork. That’s the point when this starts looking less like a pile of chunks and more like the creamy mashed potatoes I wanted. I make these in a 6-quart slow cooker, which keeps the prep simple and leaves the stovetop free.
The garlic cooks right alongside the Yukon Gold potatoes, so its flavor mellows and works its way through the whole batch instead of sitting in sharp little pockets. Yukon Golds also mash up creamy without losing their buttery character. Once the warm butter and cream go in, a few minutes of mashing turns everything into soft, garlicky potatoes with black pepper in the finish.
Serve them warm, while they’re still plush and easy to scoop.
Kitchen Note
Warm the butter and cream together before they go into the cooker. I stop microwaving when the butter is mostly melted and the cream feels warm; the mixture blends into the potatoes more easily than cold dairy.
Save these slow cooker garlic mashed potatoes for a hands-off batch of creamy, buttery potatoes with mellow garlic in every scoop.
Why These Slow Cooker Potatoes Don’t Need a Separate Pot of Boiling Water
With stovetop mashed potatoes, you drain the pot before adding butter and cream. Here, the potatoes cook in a measured amount of chicken broth, and you mash them right in the slow cooker. That means the mellow garlic and the savory liquid stay with the potatoes instead of going down the sink.
The ratio matters: three pounds of potatoes cook with one cup of broth, not a pot full of water. The potatoes soften in that covered cooker, and the broth becomes part of the base you mash. There’s no separate draining step to rush through or extra saucepan to wash. Keep the pieces close to one inch so they soften at a similar pace; oversized chunks can leave you with a mix of tender edges and firm centers when the rest are ready. This approach gives you a creamy result while keeping the garlic flavor in the bowl, where it belongs.
What Yukon Golds, Garlic, and Cream Bring to This Batch
- Yukon Gold potatoes — Their naturally creamy, lightly buttery texture suits a mash that doesn’t need extra tricks. Cut them into even 1-inch pieces so they cook evenly. Russets can work, but they make a fluffier, less buttery mash; red potatoes stay waxier and won’t turn as smooth.
- Fresh garlic — Minced cloves soften as they cook with the potatoes, giving the whole batch a rounded garlic flavor. Fresh garlic has a brighter taste than jarred minced garlic, though jarred is a practical shortcut if that’s what you have.
- Low-sodium chicken broth — It provides the cooking liquid and a savory base without making the potatoes taste overly salty. A good everyday carton is fine here; a strongly flavored broth can take over the gentle garlic. For a vegetarian batch, use vegetable broth instead.
- Unsalted butter and heavy cream — Butter brings richness, while heavy cream gives the mash its plush texture. Unsalted butter lets you control the seasoning, and heavy cream’s higher fat content makes a fuller mash than a thinner milk would.
Getting the Slow Cooker Timing and Mash Texture Right
Load the Potatoes, Broth, and Garlic
Put the peeled, 1-inch potato pieces into a 6-quart slow cooker with the chicken broth, minced garlic, and kosher salt. Stir so the garlic and salt are distributed among the pieces rather than sitting in one spot. The cooker should be covered for the cooking time. Keep the potato pieces roughly the same size so they soften together.
Cook Until a Fork Slides In Easily
Cover and cook on LOW for 4 to 5 hours or on HIGH for 2 to 3 hours. The useful cue is tenderness, not just the clock: a fork should pierce the center of a potato piece with very little resistance. If the middle is still firm, give the potatoes more time before adding the dairy. Mashing early leaves stubborn lumps that are difficult to smooth out later.
Warm the Butter and Cream
Combine the butter pieces and heavy cream in a microwave-safe measuring cup. Microwave for 30 to 45 seconds, until the butter is mostly melted and the cream is warm. If a few small butter pieces remain, that’s fine; they’ll finish melting when stirred into the hot potatoes. Keep an eye on the cup so the cream warms without bubbling over.
Mash in the Cooker and Serve Warm
Add the warm butter mixture and black pepper to the slow cooker. Mash the potatoes in place until they’re creamy, stopping once the large lumps are gone and the texture looks soft. If you keep working them after they’re smooth, they can turn pasty. Scoop and serve while warm.
Three Ways to Change the Garlic Mashed Potatoes
Make the batch dairy-free and plant-based
Use vegetable broth in place of chicken broth, six tablespoons of plant-based butter instead of dairy butter, and an equal amount of unsweetened, unflavored oat creamer in place of heavy cream. The potatoes will still mash creamy, though the result will taste a little less buttery and rich.
Turn up the garlic
Use six medium minced garlic cloves instead of five for a more pronounced garlic flavor. The slow cooker still mellows the bite, but the finished potatoes will taste more distinctly garlicky.
Use white pepper for a quieter finish
Swap the black pepper for the same amount of white pepper. It keeps the gentle peppery warmth but has a milder, less visible finish against the pale potatoes.
Storage and Reheating
- Refrigerator: Refrigerate in an airtight container within 2 hours and keep for 3 to 4 days. The potatoes will firm up as they chill.
- Freezer: Freeze airtight portions for up to 1 month. Thaw overnight in the refrigerator; the texture may be a little less smooth after freezing.
- Reheating: Warm gently in a covered saucepan or microwave, stirring partway through, until the leftovers reach 165°F. Stir in a small splash of cream or broth if they’ve thickened, and avoid high heat, which can make the dairy look greasy.
Questions That Come Up With Slow Cooker Mashed Potatoes
Slow Cooker Creamy Mashed Potatoes with Garlic
Ingredients
Equipment
Method
- Put the potatoes, chicken broth, garlic, and salt in a 6-quart slow cooker and stir to combine.
- Cover and cook on LOW for 4 to 5 hours or HIGH for 2 to 3 hours, until the potatoes are very tender when pierced with a fork.
- Combine the butter and heavy cream in a microwave-safe measuring cup and microwave for 30 to 45 seconds, until the butter is mostly melted and the cream is warm.
- Add the warm butter mixture and black pepper to the slow cooker, then mash the potatoes until creamy; serve warm.
