Recipe

Brown Butter Sage Mashed Potatoes

A Thanksgiving-ready mash with nutty brown butter, crispy sage, and a cozy, ultra-creamy texture.

By Matt Campbell

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4.9

A large serving bowl of creamy mashed potatoes topped with browned butter, crispy sage leaves, and flaky salt on a Thanksgiving table

Thanksgiving sides are where the real personality lives. Turkey is the headline, sure, but mashed potatoes are the cozy friend who shows up early, helps you carry chairs, and somehow makes everyone feel calmer.

These are my brown butter sage mashed potatoes, which is a fancy way of saying: we take butter until it turns nutty and toasty, fry a few sage leaves until crisp, and then pour that whole situation over a fluffy, buttery mash. The payoff is huge for the effort, and it feels special without turning your kitchen into a stress festival.

Bonus: this recipe is make-ahead friendly. Because on Thanksgiving, you deserve at least one dish that behaves.

Why It Works

Big flavor with simple moves: browning butter builds deep, nutty notes and makes plain mash taste like it put on a blazer.
Texture that stays dreamy: Yukon Gold potatoes mash up creamy without needing a ton of extra dairy.
Crispy sage, not soggy herbs: quick-frying the leaves in butter turns them into a crunchy garnish that tastes like Thanksgiving in one bite.
Easy to scale and reheat: doubles well for a crowd, and the simple trick is adding a splash of warm milk (and a pat of butter) when reheating so it turns creamy again.

Yukon Gold potatoes, fresh sage, butter, milk, sour cream, salt, and pepper arranged on a clean kitchen counter

Pairs Well With

Storage Tips

Refrigerate: Cool leftovers, then store in an airtight container for up to 4 days.

Reheat (best method): Warm in a saucepan over low heat with a splash of milk or broth, stirring often until creamy again. Finish with a small pat of butter and a pinch of salt.

Microwave method: Cover and heat in 60-second bursts, stirring between rounds. Add a splash of milk if it looks thick.

Freeze: You can, but the texture can turn a little grainy. The good news is higher-fat mashed potatoes freeze better, and this recipe has plenty of help from butter and sour cream. If you freeze, do it up to 1 month. Thaw overnight in the fridge and reheat gently with extra dairy.

A glass food storage container filled with leftover mashed potatoes on a kitchen counter with a small cup of milk beside it

Common Questions

Can I make these mashed potatoes ahead of time for Thanksgiving?

Yes. Make the potatoes fully, then spread them in a buttered baking dish. Press plastic wrap directly on the surface and refrigerate up to 2 days. Reheat covered at 350°F until hot throughout, about 25 to 40 minutes depending on the depth of your dish (aim for 165°F in the center if you like a thermometer moment). Add a few splashes of milk and dot with butter before reheating to bring the creaminess back. Save the crispy sage and a little browned butter to add right before serving.

What potatoes are best for mashed potatoes?

Yukon Gold are my favorite for Thanksgiving because they mash creamy and rich. Russets work too, but they are more starchy and can get gummy, especially if overmixed.

How do I keep mashed potatoes from getting gummy?

Do not overwork them. Drain well, then mash while hot. Use a potato masher or ricer, and avoid beating with a hand mixer for a long time (and definitely skip the food processor). Stir in dairy gently just until combined.

Masher vs ricer: which should I use?

A ricer gives you the smoothest, fluffiest mashed potatoes with the least chance of gumminess. A masher is a little more rustic and cozy. Both are great. Just do not whip them into submission.

Can I make this dairy-free?

You can, but it changes the vibe. Use a good plant butter and warm unsweetened oat milk. One note: some vegan butters do not brown the same way (no milk solids, no nutty magic). If yours will not brown, you can still crisp the sage in it and add a tiny pinch of nutmeg or nutritional yeast for a little of that savory depth.

Can I add roasted garlic?

Absolutely. Mash in 6 to 10 roasted garlic cloves for a sweet, mellow depth. It plays very nicely with sage.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

Large pot
Colander
Small saucepan or skillet (for brown butter)
Potato masher or potato ricer
Rubber spatula or wooden spoon
Measuring cups and spoons

The first year I tried to “elevate” Thanksgiving mashed potatoes, I got a little too confident and threw herbs into the pot like I was conducting an orchestra. The result tasted fine, but it looked like lawn clippings and nobody asked for seconds.

Brown butter fixed that. It makes the potatoes taste deeper without making them fussy, and the crispy sage on top is basically a snack for the cook. I always “test” one leaf. For quality control. For science.