Make Brown Butter Mashed Potatoes with nutty brown butter, garlic, and Parmesan for supremely creamy, flavorful mashed potatoes.
Peel or leave the skins on—your call—then cut the Yukon Golds and Russets into evenly-sized, roughly 1-inch chunks. Transfer the chunks into a large, cold stockpot and cover them with cold water so the line sits about an inch above the potatoes. Sprinkle a tablespoon of fine sea salt into the pot; this is the first seasoning that penetrates the potatoes as they cook.
Bring the pot to a lively boil over high heat, then lower the heat just enough to maintain a steady boil and cook until a knife slides into the center of a chunk with almost no resistance, about 10–12 minutes. When tender, carefully drain all the water and set the pot back on the hot burner for the brief “pan-dry” shake later—don’t cool them down. Keep everything warm; warm potatoes absorb butter and milk more readily.
While the potatoes are working, melt a tablespoon of butter in a large sauté pan and add the minced garlic. Stir it over medium-high heat until the garlic turns lightly golden and fragrant—about two minutes—then transfer the garlic to a small plate so it stops cooking. These little browned bits will add sweet, toasty notes to the finished mash.
In the same pan melt the remaining butter and keep it over medium-high, stirring as it foams. Watch closely: once the milk solids turn a warm golden-brown and the aroma is toasty, immediately pour the brown butter into a heat‑proof bowl so it stops cooking. That caramelized butter is the star flavor: nutty, amber, and glossy.

After draining, return the hot potato chunks to the empty stockpot, set it on the still-warm burner, and shake the pot gently for about a minute to drive off excess steam—this helps the mashed potatoes stay fluffy instead of watery. Remove the pot from the heat and set it on a heatproof surface so it’s ready to receive the butter and other mix-ins.
Add the reserved brown butter, sautéed garlic, warmed whole milk, and freshly-grated Parmesan to the hot potatoes. Using a sturdy potato masher, press and fold until you reach your preferred texture—somewhere between silky and slightly rustic is perfect. If the mash needs loosening, add more warm milk a little at a time. Taste as you go and adjust the texture and creaminess.
Always take a spoonful and taste. Add extra fine sea salt and freshly ground black pepper to lift the flavors—don’t be shy with the salt here, it makes a huge difference. Fold in most of the chopped chives (reserve a few for garnish) and check balance once more for butter, cheese, and seasoning.
Spoon the mashed potatoes into the serving bowl, coaxing gentle peaks with the back of the spoon so the brown butter pools in the crevices. Finish with a generous drizzle of the remaining brown butter, a scatter of chopped chives, and a final crack of fresh black pepper. Serve immediately and enjoy.
