Recipes
Roasted Garlic Mashed Potatoes Recipe
These roasted garlic mashed potatoes are creamy, buttery, and gently sweet from a whole head of garlic roasted until soft and golden. The recipe includes clear texture cues, practical substitutions, and tips for preventing gluey or dry potatoes.
Overview
These roasted garlic mashed potatoes combine fluffy potatoes with butter, warm milk, and a whole head of garlic roasted until soft, golden, and mellow. Roasting takes the sharp edge off the garlic, so it blends into the potatoes without overpowering them.
Use Yukon Gold potatoes for naturally creamy mash, russet potatoes for a lighter texture, or a mixture of both. The key to smooth potatoes is to cook them until they offer no resistance to a knife, then mash them while hot and avoid overworking them.
Ingredients
- 1 whole head of garlic
- 1 teaspoon olive oil
- 2 pounds Yukon Gold potatoes, peeled and cut into 1-inch pieces
- 1 1/2 teaspoons kosher salt, divided, plus more for the cooking water if needed
- 6 tablespoons unsalted butter, cut into pieces
- 3/4 cup whole milk or half-and-half
- 1/4 teaspoon freshly ground black pepper
- 2 tablespoons chopped fresh chives or parsley, optional, for serving
How to make it
Roast the garlic. Heat the oven to 400°F. Slice about 1/4 inch from the top of the garlic head, exposing the cloves while leaving the head intact. Place it on a small piece of foil, drizzle with the olive oil, and wrap it tightly. Roast for 35 to 45 minutes, until the cloves are very soft and lightly golden. Open the foil and let the garlic cool enough to handle.
Cook the potatoes. Put the cut potatoes in a large pot and cover them with cold water by about 1 inch. Add 1 teaspoon of the salt. Bring the water to a boil over medium-high heat, then reduce the heat to maintain a steady simmer. Cook for 15 to 20 minutes, or until a knife slides through the largest pieces without resistance.
Warm the dairy. While the potatoes cook, place the butter and milk in a small saucepan over low heat. Warm until the butter melts and the mixture is hot but not boiling. Warm dairy absorbs more evenly and helps keep the potatoes fluffy.
Drain thoroughly. Drain the potatoes in a colander, then return them to the warm pot. Set the pot over low heat for about 1 minute, shaking it occasionally, so excess surface moisture evaporates. Do not brown the potatoes.
Mash the potatoes. Squeeze the roasted garlic cloves from their skins into the pot. Add the warm butter and milk, the remaining 1/2 teaspoon salt, and the black pepper. Mash with a potato masher until creamy with a few small, soft pieces remaining. For an especially smooth result, pass the hot potatoes through a ricer before stirring in the butter and milk.
Taste and serve. Taste the potatoes and add more salt if needed. If they seem thicker than you like, stir in warm milk 1 tablespoon at a time. Transfer to a serving bowl and finish with the chopped herbs, if using. Serve immediately while hot.
Expert tips
- Choose the right potato: Yukon Golds make a dense, buttery mash; russets make a lighter, fluffier mash. A 50-50 combination gives you both qualities.
- Do not start with boiling water: Cold water lets the potato pieces heat evenly, so the outside is less likely to fall apart before the centers soften.
- Avoid gluey potatoes: Drain them well and mash only until combined. A food processor, blender, or vigorous mixing releases too much starch and can make the texture stretchy.
- Fix dry potatoes: Stir in warm milk or half-and-half, 1 tablespoon at a time, until the mash loosens. Add butter for richness rather than cold liquid.
- Fix bland potatoes: Add salt in small amounts, tasting after each addition. Potatoes need enough seasoning to balance their mild flavor, but the amount needed depends on how salty the cooking water and butter are.
- Make them ahead: Prepare the potatoes up to 1 hour before serving and keep them warm in a covered heatproof bowl set over a pot of barely simmering water. Stir occasionally and loosen with a splash of warm milk if needed.
- For a complete roast dinner, serve these alongside lemon herb roasted chicken. If you want a bread option for the table, rosemary garlic focaccia also pairs well with the mellow garlic flavor.
Serving and storage
Serve the mashed potatoes hot with extra butter, black pepper, or chopped chives. They work well with roast chicken, steak, meatloaf, sausages, or mushroom gravy.
Cool leftovers promptly and refrigerate them in a covered container within 2 hours. Use within 3 to 4 days. Reheat gently in a saucepan over low heat or in the microwave, stirring several times. Add a tablespoon or two of milk, cream, or butter to restore a soft texture as they warm. Do not leave reheated potatoes at room temperature for extended serving.
Frequently asked questions
Can I use roasted garlic from a jar instead of roasting a whole head?
Yes. Use about 2 to 3 tablespoons of drained jarred roasted garlic, then taste before adding extra salt because jarred garlic may be packed with seasoned oil or brine. The flavor may be slightly less sweet than freshly roasted garlic.
Why did my mashed potatoes turn gluey?
The potatoes were likely overworked, especially if they were beaten in a food processor, stand mixer, or blender. Mash by hand or use a ricer, and stop as soon as the potatoes are smooth enough for your preference.
Can I make this recipe without dairy?
Yes. Replace the butter with a plant-based butter or olive oil and replace the milk with an unsweetened, unflavored plant milk. Oat or soy milk gives more body than a very thin milk alternative.
How can I make the roasted garlic flavor stronger?
Roast two garlic heads instead of one, or reserve a few roasted cloves and mash them in after tasting. Adding raw garlic is not recommended here because it can make the finished potatoes sharp and harsh.
