Luscious, fluffy Garlic Thyme Mashed Potatoes are easy to make and bursting with herbaceous, buttery flavor that elevates any meal. Serve them as a holiday side for Thanksgiving or Christmas, or dress up a weeknight dinner into something special.
Russet potatoes are a pantry staple I always recommend. Their high starch content gives an ideal fluffy texture for mashed potatoes. With simple ingredients—potatoes, butter, cream, thyme and garlic—this recipe yields ultra-creamy mashed potatoes with a warm, aromatic finish. They pair beautifully with roasts, braised short ribs, steaks, or salmon, and they make holiday meals feel truly special.
Ingredients and Substitutions
Classic mashed potatoes are made from potatoes, dairy, butter and salt. This version uses a few simple additions—fresh thyme, garlic and a touch of Dijon—to infuse extra aroma and depth while keeping the preparation straightforward.
- Russet potatoes – High-starch potatoes like russets or Idaho give the fluffiest texture. Yukon Gold works too. Avoid red or white potatoes for this style, as they can become dense or gluey.
- Heavy cream – Whipping cream or heavy cream adds richness. Whole milk will also work. For a dairy-free option, use creamy oat milk.
- Butter – Unsalted butter lets you control the salt level.
- Fresh thyme – Fresh thyme provides the best aroma. If unavailable, fresh rosemary is an acceptable alternative. To replace fresh with dried, use about 2 teaspoons dried.
- Garlic cloves – Fresh garlic infuses the cream best; garlic powder can substitute in a pinch (about 1 teaspoon).
- Dijon mustard – A small amount brightens the flavor and balances the richness. It’s optional but recommended.
- Salt & pepper – Use coarse kosher salt and freshly ground black pepper to finish.
Other Herbs & Spices for Potatoes
You can easily adapt this base recipe by swapping or adding herbs and spices. Remove the thyme or garlic to try new flavor combinations.
- Paprika, smoked paprika, or chili powder – Start with 1/2 teaspoon and adjust to taste for a subtle smoky or peppery note.
- Dill & lemon – For a bright twist, add 1–2 tablespoons fresh dill, 1 tablespoon lemon juice and 1 teaspoon lemon zest.
- Chives – Infuse the butter and cream with chives, then reserve some chopped chives to sprinkle on top.
How to Make Fluffy & Soft Mashed Potatoes
Mashed potatoes are simple, but some techniques are key to avoiding a heavy, gluey texture. Follow these tips to get perfectly fluffy, silky results every time.
- Start with cold water – Place diced potatoes in cold water before heating. Adding potatoes to already boiling water can cook the outside too quickly and leave the centers underdone.
- Cook to fork tender – Boil until the potatoes slip off a fork easily and break apart with no resistance.
- Warm the butter & cream – Add warm (not cold) dairy to the potatoes. Cold dairy cools the potatoes and can create lumps.
- Strain out the thyme and garlic – The thyme and smashed garlic infuse the cream. For a smooth mash, remove them with a fine-mesh strainer before adding the liquid to the potatoes.
- Mix while hot – Mash and mix while the potatoes are still warm for ease and speed.
- Avoid overmixing – Overworking potatoes releases starch and makes them gluey. Do not use a food processor or blender. A ricer, a hand masher, or a low-speed immersion blender used gently will give creamy results without overworking.
How to Serve – Toppings & Main Dish Pairings
These garlic thyme mashed potatoes work with almost any roast or saucy main. They’re excellent with roasted or braised meats and pair well with gravies and pan sauces. Finish them with a pat of butter and extra thyme for a classic presentation.
Topping Suggestions
- Butter – A pat of butter or a compound herb butter adds richness and shine.
- Gravy – Traditional gravy pairs perfectly with these potatoes for holiday plates.
- Demi-glace – For steak, a concentrated demi-glace adds deep, savory flavor.
- Cheese – Sharp cheddar, gruyère, or fontina melted into the top complements garlic and thyme.
How to Store
Leftover mashed potatoes store well in an airtight container in the refrigerator for up to five days. Reheat gently in the microwave or on the stovetop over low heat, stirring in a splash of milk or cream to restore creaminess.
Leftovers are also versatile: use them for shepherd’s pie, mashed potato cakes, or even mashed potato bread to make new meals out of the same batch.
Other sides to enjoy with these potatoes include sautéed green beans with bacon, honey-glazed roasted carrots, creamed corn, scalloped potatoes with kale and leeks, fried Brussels sprouts with bacon, easy drop biscuits, or garlic rolls.
Garlic Thyme Mashed Potatoes
Mikayla M.
Ingredients
- 3 large russet potatoes*
- 1/2 cup heavy cream
- 5 tablespoons unsalted butter
- 5 sprigs fresh thyme
- 4 cloves garlic
- 1 teaspoon Dijon mustard
- salt & pepper
Instructions
- Wash and peel the potatoes, then cut into medium dice. Peel and lightly smash the garlic cloves with the side of a knife.
- Place the potatoes and smashed garlic in a large pot and cover with water by 1–2 inches. Add 2 teaspoons salt to the water so the potatoes absorb seasoning as they cook.
- Bring to a boil over high heat, then reduce to a simmer and cook until the potatoes are very tender, about 8–15 minutes depending on size.
- While the potatoes cook, combine the heavy cream, butter, thyme sprigs, Dijon mustard, 1/4 teaspoon salt and the smashed garlic in a small saucepan.
- Warm the cream mixture over low heat—do not boil—until the butter melts and the flavors infuse. Stir occasionally to incorporate the mustard and butter.
- When the potatoes are tender, drain them and return them to the pot.
- Break the potatoes down with a ricer, masher, low-speed immersion blender or fork just until mostly smooth.
- Remove the thyme sprigs and garlic from the cream, then pour the warm cream over the potatoes (or strain it through a fine mesh sieve). Gently finish mashing or mixing until smooth and creamy. Taste and adjust salt and pepper as needed.
Notes
Nutrition
Carbohydrates: 52g
Protein: 7g
Fat: 25g
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