Cheesy Mashed Potatoes with Garlic & Sour Cream (Easy)
Abi Guna
Creamy, cheesy mashed potatoes made with garlic and sour cream, the perfect side dish for any meal or special occasion. Smooth, rich, and full of flavor, this easy mashed potato recipe pairs beautifully with your Thanksgiving or weeknight dinner.
2½lbsYukon Gold potatoespeeled and cut into chunks
4clovesgarlicpeeled
4tablespoonsunsalted butter
½cupwhole milkwarm
½cupheavy creamwarm
1cupshredded white cheddar cheese
¼cupgrated Parmesan cheese
1teaspoonSalt
½teaspoonground black pepper
2tablespoonssour cream
Chopped fresh chivesfor garnish
Instructions
Boil the potatoes and garlic
Add peeled potato chunks and whole garlic cloves to a large pot. Cover with cold, salted water by about 1 inch. Bring to a boil over medium-high heat and cook until the potatoes are very tender when pierced, 15–20 minutes.
Drain and dry for fluffier mash
Drain well, then return potatoes and garlic to the warm pot. Let them sit uncovered for 2–3 minutes so excess moisture steams off—this little pause helps the potatoes soak up the dairy and turn extra creamy.
Mash until smooth
Using a potato masher, ricer, or hand mixer, mash the potatoes and garlic until smooth and fluffy, with no big lumps.
Stir in the dairy for creaminess
Add butter, warm milk, and warm cream. Stir gently until fully incorporated and silky. Warming the dairy prevents gumminess and keeps the mash light.
Make them cheesy & tangy
Mix in cheddar, Parmesan, and sour cream. Stir just until the cheese melts and the potatoes become rich and velvety. Taste and season with salt and black pepper.
Finish and serve
Spoon into a serving bowl. Top with a little melted butter and a sprinkle of chopped chives. Serve hot with your favorite mains, these cheesy mashed potatoes are a cozy win for weeknights or your holiday table.
Notes
Pick the right potatoes: Yukon Gold (buttery and naturally creamy) or Maris Piper are ideal for smooth, rich mash.
Shred cheese fresh: Block cheese melts cleaner than pre-shredded, giving you a silky finish without graininess.
Cut evenly: Keep potato chunks the same size so they cook at the same pace—no gluey bits, no undercooked pieces.
Stir smart: Use a wooden spatula when mixing; it’s gentle on the potatoes and can soak up a touch of extra moisture.
Adjust the texture: If the mash feels too thick, loosen it with a small splash of warm milk until it’s just right.