Roasted Garlic Mashed Potatoes Recipe

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These roasted garlic mashed potatoes are made with fluffy Russet potatoes, a whole head of mellow roasted garlic, butter, heavy cream, and sour cream. The sour cream is my not-so-secret addition: it balances the richness and gives the potatoes just enough tang without covering up the delicious flavor from the sweet roasted garlic.

Overhead view of creamy roasted garlic mashed potatoes in a round white serving bowl with melted butter, roasted garlic cloves, chopped chives, and black pepper. A metal serving spoon with a wooden handle rests inside the bowl, with white salt and pepper shakers and a garlic bulb nearby.

Quick Look: Roasted Garlic Mashed Potatoes

Best type of potato: Russet potatoes for a light, fluffy texture.
How much garlic: One whole head for 3 pounds of potatoes gives them a noticeable but mellow roasted garlic flavor.
Flavor: Rich, buttery, and savory with sweet roasted garlic and a little tang from sour cream.
Texture: Light, fluffy, and creamy without becoming dense or gluey.
Key technique: Mash the roasted garlic into a paste before folding it into the potatoes so the flavor distributes evenly without overworking them.
Total time: About 1 hour 20 minutes, with most of that time spent roasting the garlic.

Roasted garlic completely changes the personality of mashed potatoes. Instead of the sharp bite from raw garlic, whole bulbs are slowly roasted until the cloves are soft, buttery, slightly sweet, and deeply savory. Once roasted, the cloves are mashed into a paste so that the mellow garlic flavor blends smoothly throughout the potatoes.

For the potatoes themselves, I stick with Russets, just as I do in my creamy mashed potatoes recipe. Their higher starch content gives this version the light, fluffy texture I want, while butter, heavy cream, and sour cream make them rich and creamy.

Quick Look: Roasted Garlic Mashed Potatoes
Ingredients and Substitutions
Why Roast Garlic for Mashed Potatoes?
How Much Roasted Garlic Should I Add?
How to Make Roasted Garlic Mashed Potatoes
Troubleshooting Roasted Garlic Mashed Potatoes
Serving Ideas
Make-Ahead, Keep Warm, and Reheating
Roasted Garlic Mashed Potatoes FAQs
More Flavorful Mashed Potato Recipes
Roasted Garlic Mashed Potatoes Recipe

Ingredients and Substitutions

For the full measurements, see the recipe card at the bottom of the post.

Overhead ingredient layout for roasted garlic mashed potatoes showing Russet potatoes in a white bowl, cubed butter, sour cream, heavy cream, olive oil, a whole garlic bulb, salt, and black pepper on a white marble surface. Text labels identify "russet potatoes," "butter," "sour cream," "heavy cream," "olive oil," "garlic bulb," "salt," and "black pepper."

Russet potatoes: My first choice for roasted garlic mashed potatoes because their high starch content produces a light and fluffy mash that absorbs the butter, cream, sour cream, and roasted garlic without becoming overly dense. Yukon Gold potatoes can be substituted, but they make a denser, somewhat creamier mash. If you want the fluffy texture shown in these photos, stick with Russets. If you want to learn more about why different potatoes behave differently when mashed, see my guide waxy vs. starchy potatoes.
Garlic: As written, this recipe uses one whole head of roasted garlic. Roasting softens the cloves and gives them a mellow, slightly sweet flavor without the sharp bite of raw garlic. You can read more about how much garlic to use in the section below.
Olive oil: A small drizzle helps the garlic roast and caramelize. Avocado oil also works.
Butter: I use salted butter for richness and flavor. If using unsalted butter, you may need a little more added salt at the end.
Heavy cream: Adds richness while keeping the potatoes smooth and creamy. Whole milk can be substituted for a slightly lighter result.
Sour cream: Adds creaminess and a subtle tang that balances the butter and sweet roasted garlic. Full-fat sour cream gives the best texture. Plain full-fat Greek yogurt can work in a pinch, although the flavor will be a little different.
Salt and black pepper: Salt the cooking water generously, then taste and adjust again after adding the butter, cream, and sour cream.

Why Roast Garlic for Mashed Potatoes?

Roasting garlic takes away its sharp, pungent bite and turns the cloves into something much softer, sweeter, nuttier, and more savory. That softer, caramelized garlic flavor blends beautifully with buttery mashed potatoes without overpowering them. If you’ve never made it before, see my full guide on how to roast garlic for more tips on choosing, roasting, and storing whole garlic bulbs.

How Much Roasted Garlic Should I Add?

One whole head of roasted garlic gives 3 pounds of potatoes a noticeable but mellow garlic flavor without dominating the potatoes. Garlic heads vary in size, so taste the potatoes after adding the roasted garlic and adjust from there.

For a stronger roasted garlic flavor, roast a second head at the same time and add more to taste. Because roasted garlic is much sweeter and less pungent than raw garlic, you can use quite a bit more.

How to Make Roasted Garlic Mashed Potatoes

Overhead view of a whole garlic bulb with the top sliced off to expose the cloves, drizzled with olive oil and resting on crinkled aluminum foil inside a silver metal baking pan on a white surface.

Roast the garlic. Slice about 1/4 inch from the top of the garlic head to expose the cloves. Drizzle with olive oil, wrap tightly in foil, and roast at 400°F. The cloves should be golden, caramelized, and soft enough to squeeze easily from their skins.

Overhead view of peeled Russet potatoes cut into chunks and submerged in cold water inside a white enameled Dutch oven with a cream-colored interior. A dark green fringed kitchen towel rests beside the pot.

Prepare the potatoes. Peel the Russets and cut them into evenly sized chunks so they cook at the same rate. Add them to a large pot, cover with cold water, and salt the water generously. Bring to a boil, then reduce to a gentle simmer and cook just until a fork slides easily through the center.

Overhead view of cooked Russet potato chunks drained in a white enameled Dutch oven with a cream interior. The potatoes look soft and dry, with a dark green fringed towel beside the pot.

Drain and steam-dry. Completely drain the potatoes, then return them to the warm pot. Allow them to steam for 1-2 minutes to let some of the moisture evaporate before adding anything else.

Overhead view of cooked Russet potatoes in a white enameled Dutch oven topped with cubes of pale yellow butter and a large spoonful of white sour cream. A dark green fringed towel sits beside the pot.

Add the butter and dairy. Add the butter, sour cream, and heavy cream while the potatoes are still hot. For the best results, bring the butter, sour cream, and heavy cream to room temperature first so they incorporate more easily and don’t cool the potatoes too quickly.

Overhead view of creamy mashed potatoes filling a white enameled Dutch oven with a cream-colored interior. The potatoes have a soft, fluffy texture with visible swirls from mashing.

Mash the potatoes. Use a potato masher to mash until creamy and mostly smooth. For an extra-smooth texture, you can use a potato ricer instead. Stop once they’re creamy and mostly smooth. Avoid overworking, as Russets can turn gummy if over-mixed.

Overhead view of a roasted garlic bulb opened on crinkled aluminum foil inside a silver metal baking pan. The exposed garlic cloves are deeply golden brown and caramelized, with a dark green fringed towel along the side.

Prepare the roasted garlic. Once the garlic is cool enough to handle, gently squeeze the soft cloves from their skins and mash them into a rough paste with a fork.

Overhead view of creamy mashed potatoes in a white enameled Dutch oven topped with pieces of golden roasted garlic. A dark green fringed kitchen towel is visible beside the pot.

Fold in the roasted garlic. Gently fold the garlic into the potatoes until it’s evenly distributed. Taste and adjust with more roasted garlic, cream, salt, or black pepper if needed.

Overhead view of creamy roasted garlic mashed potatoes in a white enameled Dutch oven, topped with a pat of melting butter, whole roasted garlic cloves, chopped fresh chives, and cracked black pepper. A whole garlic bulb and small bowl of chives sit nearby.

Serve and garnish. Spoon the mashed potatoes into a serving bowl or leave them in the Dutch oven, then finish with a little extra butter, chopped chives, and freshly cracked black pepper. I like adding a few of the whole roasted garlic cloves on top.

Troubleshooting Roasted Garlic Mashed Potatoes

Why are my mashed potatoes gluey or gummy? Overmixing is usually the culprit. Unfortunately, once mashed potatoes turn gluey, the texture can’t really be reversed. You can gently fold in a little warm cream or melted butter to loosen them, but the best fix is prevention. Next time, mash just until creamy, then gently fold in the dairy and roasted garlic without overworking the potatoes.

Why don’t my mashed potatoes taste garlicky enough? Make sure the garlic is roasted until the cloves are deeply golden, soft, and caramelized. Garlic heads also vary in size, so if you want a stronger flavor, roast an extra head and add more to taste.

Why are my mashed potatoes watery? The potatoes may have been overcooked, not drained well enough, or had too much cream added to them (though this is less likely). To fix them, return the potatoes to the pot over low heat and gently stir for a few minutes to help evaporate the excess moisture.

Close-up view of creamy roasted garlic mashed potatoes in a white enameled Dutch oven with a square pat of melting butter in the center, golden roasted garlic cloves, chopped green chives, and cracked black pepper.

Serving Ideas

Roasted garlic mashed potatoes are made for rich, savory mains and anything with gravy. For a holiday meal, serve them with your oven-roasted Thanksgiving turkey, easy homemade gravy, and buttery old-fashioned Thanksgiving stuffing. For an easy Sunday dinner, they pair perfectly with classic meatloaf, delicious oven-roasted pork loin, or garlic butter steak bites.

Make-Ahead, Keep Warm, and Reheating

Make ahead: You can make these garlic mashed potatoes up to 1-2 days in advance. Let them cool, transfer to an airtight container, and refrigerate until ready to reheat. And if you’re specifically looking for a make-ahead option, my baked mashed potato casserole is a great choice.

Storage: Refrigerate leftovers in an airtight container in the refrigerator for up to 4 days. Freezing is not recommended. The dairy can separate and the potatoes may become grainy or watery after thawing.

Reheat on the stovetop: Add the potatoes to a saucepan or Dutch oven over low heat with about 2-4 tablespoons of milk or cream per 3 cups of mashed potatoes. Stir gently until warmed through, adding a little more dairy if needed.

Reheat in the oven: Transfer the potatoes to a baking dish, stir in a few tablespoons of milk or cream, cover with foil, and bake at 350°F until hot, usually 25-35 minutes depending on the amount.

How do I keep these roasted garlic mashed potatoes warm for a holiday meal?

You’ll want to use a slow cooker for that. Transfer the hot mashed potatoes to a lightly buttered slow cooker and keep on WARM for up to 2 hours. Keep the lid on and stir occasionally. If they start to thicken, fold in a small splash of warm cream or milk. If you’d rather make the potatoes entirely in the slow cooker, try my Crockpot mashed potatoes.

Overhead close-up of roasted garlic mashed potatoes served in a round white bowl, topped with a square pat of melting butter, golden roasted garlic cloves, chopped green chives, and cracked black pepper. A whole garlic bulb and bowl of chives sit around the serving dish.

Roasted Garlic Mashed Potatoes FAQs

Can I roast the garlic ahead of time?

Yes. Roast the garlic up to 3 days ahead, let it cool, then refrigerate it in an airtight container. Bring it to room temperature before adding it to the potatoes.

Can I use roasted garlic from a jar?

You can, but freshly roasted garlic has a sweeter, deeper flavor. If using prepared roasted garlic, add it gradually and taste as you go since the flavor and intensity can vary.

Can I make these roasted garlic mashed potatoes less garlicky?

Yes. Start with half of the roasted garlic, taste, and add more as needed. Roasted garlic is much milder than raw garlic, but the intensity can still vary depending on the size of the head.

More Flavorful Mashed Potato Recipes

Easy Creamy Mashed Potatoes Recipe

Crockpot Mashed Potatoes

Instant Pot Mashed Potatoes

Boursin Mashed Potatoes Recipe

Looking for more ideas? Browse all of my delicious Potato Recipes.

If you make these roasted garlic mashed potatoes, I’d love to hear how they turned out for you. Did you use one head of garlic or add a little extra? Please leave me a comment below and, if you enjoyed the recipe, give it a star rating. Your feedback helps other readers know what to expect and helps me keep improving the recipes I share here. Thank you so much 💛

5 from 3 votes