25-Minute Mashed Sweet Potatoes

These creamy mashed sweet potatoes are a savory twist on a classic side dish, packed with natural fiber and plant-based protein.

Light on saturated fat yet rich in flavor, this recipe uses simple ingredients like garlic, milk, and light sour cream.

Quick, easy, and satisfying, it’s perfect for everyday meals or effortless meal prep.

Mashed Sweet Potatoes

Ruth M. Moran
A quick, healthy twist on mashed sweet potatoes—savory, creamy, and fiber-rich.
Perfect as a side dish for any meal, this recipe combines garlic, butter, milk, and light sour cream for a smooth, satisfying texture.
Low in saturated fat and naturally flavorful, it’s an everyday favorite your family will love.
Prep Time 5 minutes
Cook Time 20 minutes
Total Time 25 minutes
Course Side Dish
Cuisine American
Servings 5

Equipment

  • 1 large pot
  • 1 colander
  • 1 potato masher or hand mixer
  • 1 Small skillet
  • Measuring cups and spoons

Ingredients
  

  • 2 lbs 4 medium sweet potatoes, peeled and cubed
  • 1 tbsp butter
  • 3 cloves garlic crushed
  • ½ cup 1% milk
  • 2 tbsp light sour cream
  • Salt to taste
  • Freshly cracked black pepper to taste

Instructions
 

  • Prepare the Sweet Potatoes: Begin by peeling your sweet potatoes.
    Make sure to remove all the skin so that the final mash is silky and smooth.
    Once peeled, cut the sweet potatoes into evenly sized cubes, about 1–2 inches each.
    Uniform pieces ensure that the potatoes cook at the same rate and become tender without overcooking.
  • Boil the Sweet Potatoes: Place the cubed sweet potatoes into a large pot.
    Fill the pot with enough water to fully cover the potatoes, and add a pinch of salt to the water to enhance their natural flavor.
    Bring the water to a rolling boil over medium-high heat.
    Once boiling, reduce the heat to medium and let the potatoes simmer gently.
    Cook them for approximately 15–20 minutes, or until a fork slides easily through the cubes without resistance.
  • Drain the Potatoes: When the sweet potatoes are tender, carefully pour them into a colander to drain the water.
    Give them a gentle shake to remove any excess water, as this helps prevent the mash from becoming watery.
  • Sauté the Garlic: While the sweet potatoes are draining, melt 1 tablespoon of butter in a small skillet over medium heat.
    Add the crushed garlic cloves to the melted butter. Sauté the garlic for 1–2 minutes, stirring constantly, until it becomes fragrant and lightly golden.
    Be careful not to burn the garlic, as this can make it bitter.
    The butter and garlic combination will infuse the potatoes with a rich, aromatic flavor.
  • Return Potatoes to the Pot: Once drained, return the sweet potatoes to the same pot.
    Pour in the sautéed garlic along with the melted butter, ensuring all the garlic pieces are evenly distributed among the potatoes.
  • Add Dairy Ingredients: Pour ½ cup of 1% milk and 2 tablespoons of light sour cream into the pot with the sweet potatoes.
    These ingredients add creaminess and help create a smooth texture without making the mash heavy.
  • Mash the Potatoes: Using a potato masher or a hand mixer, begin mashing the sweet potatoes together with the garlic, butter, milk, and sour cream.
    Work the mixture until it reaches a smooth and creamy consistency, without large lumps.
    If you prefer a silkier texture, you can gradually add a little more milk, one tablespoon at a time, until it reaches your desired consistency.
  • Season the Mash: Taste the mashed sweet potatoes and season them with salt and freshly cracked black pepper.
    Adjust according to your preference, keeping in mind that the garlic and butter already provide a subtle savory flavor.
    Mix well to ensure the seasoning is evenly incorporated throughout the mash.
  • Serve and Enjoy: Transfer the mashed sweet potatoes to a serving bowl.
    For an extra touch, you can drizzle a tiny bit of melted butter on top or sprinkle with freshly chopped herbs such as parsley or chives.
    Serve warm as a comforting side dish for any meal.
  • Optional Feedback Step: If you’re sharing this recipe with others, consider leaving a rating or comment about how the recipe turned out.
    Sharing your experience helps others enjoy the dish and supports the continued creation of high-quality, healthy recipes.

Notes

  • Peel and cube sweet potatoes evenly to ensure uniform cooking.
  • Use 1% milk for a lighter mash, or substitute with almond milk for a dairy-free option.
  • Light sour cream can be swapped with Greek yogurt for added protein and tanginess.
  • Don’t overcook the sweet potatoes, or they may become waterlogged and affect texture.
  • Adjust garlic amount according to taste—roasted garlic can add a sweeter, milder flavor.
  • For extra creaminess, warm the milk before adding to the potatoes.
  • Multiply ingredients proportionally if preparing for larger gatherings.

Chef’s Secrets For Perfect Mash

The key to creamy mashed sweet potatoes lies in preparation and patience.

Always cut your potatoes into evenly sized cubes so they cook uniformly.

When boiling, keep an eye on the texture—overcooked potatoes absorb too much water and become mushy, while undercooked ones create lumps.

Sautéing the garlic in butter before mixing it in enhances flavor complexity, creating a subtle nutty aroma that infuses the entire dish.

Using room-temperature dairy, like slightly warmed milk or sour cream, ensures smooth blending without chilling the potatoes.

For an ultra-silky texture, consider using a hand mixer or potato ricer rather than mashing by hand.

Serving Suggestions For Every Meal

Mashed sweet potatoes pair beautifully with roasted or grilled meats, such as chicken, turkey, or pork.

They also complement vegetarian proteins like lentil loafs, tofu steaks, or sautéed mushrooms.

For an added flavor boost, sprinkle with fresh herbs like parsley, chives, or thyme.

A dash of smoked paprika or cinnamon can provide a subtle, aromatic twist.

Serve immediately while warm for the best texture, or layer in a casserole dish with a light cheese topping for a comforting, family-style meal.

These mashed sweet potatoes are versatile enough to shine at both weeknight dinners and festive holiday spreads.

Storage Tips For Fresh Potatoes

Store leftover mashed sweet potatoes in an airtight container in the refrigerator for up to 3–4 days.

To maintain creaminess, add a splash of milk or water when reheating and stir gently over low heat on the stove or in the microwave.

For longer storage, mashed sweet potatoes can be frozen for up to 2 months.

Portion them into freezer-safe containers or bags, leaving room for expansion.

Thaw overnight in the refrigerator and reheat slowly to preserve texture.

Avoid reheating at high temperatures, as this can cause the mash to separate or dry out.

Frequently Asked Questions

1. Can I use different types of sweet potatoes?

Yes! Orange-fleshed varieties are classic and naturally sweet, but you can also try white or purple sweet potatoes.

Keep in mind that cooking times may vary slightly depending on the type and size of the cubes.

2. How can I make this recipe dairy-free?

Substitute the 1% milk with unsweetened almond, oat, or soy milk.

Replace the light sour cream with a plant-based yogurt or vegan cream alternative. The flavor will remain creamy and delicious.

3. Can I prepare this recipe in advance?

Absolutely! You can peel, cube, and even boil the sweet potatoes a day ahead.

Store them in the refrigerator, then mash with butter, milk, and sour cream just before serving to keep the texture fresh and fluffy.

4. Why are my mashed sweet potatoes sometimes watery?

Watery mash usually results from overcooking the potatoes or adding cold milk directly.

Drain thoroughly after boiling and warm your milk or cream before incorporating. Mash gently to avoid breaking down the starches too much.

5. Can I add extra flavor or toppings?

Definitely! Try roasted garlic, caramelized onions, or a sprinkle of fresh herbs. For a richer version, drizzle a small amount of olive oil or melted butter on top.

Spices like cinnamon, nutmeg, or smoked paprika can also elevate the flavor without adding extra calories.