Dessert • Thanksgiving

Mashed Sweet Potatoes

Name: Mashed Sweet Potatoes
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Yield: 8 servings
Ingredients: 3 lb sweet potatoes (about 4 medium), peeled and cut into 1-inch chunks; 4 Tbsp unsalted butter, cut into pieces; 2 Tbsp packed brown sugar; 1/3 cup whole milk, warmed; 1/2 tsp ground cinnamon; 1/4 tsp ground nutmeg; 1 tsp kosher salt; 1/4 tsp black pepper

Smooth mashed sweet potatoes with butter, a little brown sugar, and warm spice, ready in one pot without a casserole topping.

Updated: Nov 9, 2026

⏱ 40 mintotal

8servings

230 kcalper serving

Easylevel

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Why you'll like it

Ready in about 40 min.
Serves 8 — easy to halve or double.
Easy level — everyday equipment only.
Storage, freezing and reheating covered below.

Mashed Sweet Potatoes takes 40 min and makes 8 servings from one pot, with no marshmallow topping and no baking dish. Sweet potatoes are boiled until a knife slides in with no resistance, then drained well and mashed with butter, a small amount of brown sugar, and a pinch of cinnamon and nutmeg.

Helpful guides

Instructions

Step 1

Put the sweet potato chunks in a large pot and cover them with cold water by 2 inches, then add 1 tsp salt. Starting in cold water heats the chunks evenly so the outside does not soften long before the center does.

Step 2

Bring to a boil, then lower the heat and simmer 15 to 20 minutes, until a knife slides into the thickest piece with no resistance. Drain in a colander and let the potatoes steam dry in the colander for 2 to 3 minutes.

Step 3

Return the potatoes to the dry pot off the heat and mash with a potato masher until mostly smooth, leaving a few small lumps for texture. An electric mixer works too, but overbeating turns sweet potatoes gluey.

Step 4

Add the butter, brown sugar, cinnamon, nutmeg, salt, and pepper and stir until the butter melts completely. Hot potatoes melt the butter evenly, while cold mash leaves streaks of solid fat.

Step 5

Stir in the warm milk a little at a time until the mash is loose enough to spoon but still holds a mound. Cold milk cools the mash and makes it tighten, so warm it first.

Step 6

Taste and adjust the salt and sugar, then transfer to a serving bowl and serve warm. Cool leftovers within 2 hours and refrigerate in a covered container.

Troubleshooting — fixes, not repeats

If the mash turns watery, the potatoes were underdrained or the pot was covered after mashing. Drain thoroughly, let them steam dry, and stir over low heat for a minute to drive off excess moisture.
If it tastes flat, it needs salt rather than more sugar. Sweet potatoes are naturally sweet, and salt is what makes that sweetness read as flavor instead of just sugar.
If the texture is gluey, the potatoes were overworked with a mixer or food processor. Mash by hand, or pulse briefly and stop while small lumps remain.
If you want a sweeter dish, add 1 more tablespoon of brown sugar and a drizzle of maple syrup at the table rather than stirring in more sugar, so each serving can be adjusted.

Make it your way

For a dairy-free version, use olive oil or a plant butter and unsweetened oat milk in place of the butter and milk.
A savory direction skips the brown sugar and adds 2 Tbsp chopped fresh sage browned in the butter, which suits a holiday table next to roast turkey.
For a marshmallow-topped casserole, spread the mash in a buttered dish, top with mini marshmallows, and broil 2 to 3 minutes until browned.

Storage & reheating

Cool leftovers within 2 hours, then refrigerate in a covered container and use within 3 to 4 days. Reheat only the portion you will eat until steaming hot throughout — poultry and reheated rice should reach 165°F (74°C).

Reheat in a saucepan over low heat with a splash of milk, stirring until hot, or in a covered dish at 350 degrees F for 20 minutes.

Freeze in a sealed container up to 2 months and thaw overnight in the refrigerator, then reheat and stir well.

FAQ

How is this different from sweet potato casserole?
This is a plain mash with butter, a little brown sugar, and spice, served straight from the pot. A casserole usually adds eggs and a pecan or marshmallow topping and bakes in a dish, which changes both the texture and the prep time.

Can I use a mixer?
Yes, but briefly. A hand mixer on low speed for 20 to 30 seconds smooths the mash, while longer mixing develops a gluey, pasty texture. A potato masher or ricer gives the best control and leaves a little pleasant texture.

Can I make it ahead?
Yes. Make it up to 2 days ahead, cool within 2 hours, and refrigerate covered. Reheat gently with a splash of milk, since the mash thickens as it sits. Hold it in a slow cooker on warm for a holiday meal, stirring occasionally.