Creamy Sweet Potatoes with Mustard and Lemon is a simple, flavorful sweet potato side dish with a bright, savory twist. Instead of leaning fully into the natural sweetness of the potatoes, this recipe balances them with freshly squeezed lemon juice and prepared English mustard. The lemon adds freshness and a gentle tang, while the mustard brings a subtle heat that makes the mashed sweet potatoes taste more complex without making the dish difficult to prepare.
This recipe is a good choice when you want a side dish that feels familiar but not ordinary. Sweet potatoes are naturally rich and smooth when mashed, and the addition of butter and a little heavy cream gives them a creamy, comforting texture. The mustard and lemon keep the flavor from becoming too heavy or too sweet, making this dish especially versatile. It pairs well with roast chicken, turkey, or pork, and it is easy enough for a weeknight meal while still being polished enough for a holiday table.
The method is straightforward: peel and cube the sweet potatoes, boil them until tender, drain them well, and mash them with butter, cream, mustard, lemon juice, salt, and pepper. Letting the drained potatoes sit briefly over the heat helps evaporate extra moisture, which gives the final mash a better texture. For a milder flavor, start with one tablespoon of English mustard and add more only after tasting. If you enjoy a brighter finish, add a little extra lemon juice at the end.
Creamy Sweet Potatoes with Mustard and Lemon
Ingredients
- 1 lb sweet potatoes, about 3 large, peeled
- 3 tablespoons butter
- 2 tablespoons heavy cream
- 1 to 2 tablespoons prepared English mustard, Colman’s
- Juice of 1/2 lemon, 1-1/2 tablespoons or more to taste
- Salt and freshly ground black pepper
Instructions
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Peel the sweet potatoes and cut them into 1-inch cubes. Place the cubes in a saucepan, sprinkle with 1/2 teaspoon salt, and cover with cold water. Bring the water to a boil, then cook the sweet potatoes until they are tender when pierced with a knife, about 12 to 15 minutes. Drain well and return the potatoes to the pan.
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Set the pan back over the heat for 1/2 to 1 minute to allow any excess water to evaporate. Transfer the sweet potatoes to a mixing bowl and add the butter, heavy cream, and mustard. Stir until the butter begins to melt, then mash everything together with a potato masher until creamy. Stir in the lemon juice, season to taste with salt and freshly ground black pepper, and add more lemon juice or mustard if desired. Serve immediately while warm.
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This recipe is adapted from a version sent to us by the folks at Colman’s Mustard.
Recipe Notes
For the best texture, drain the cooked sweet potatoes thoroughly before mashing. Sweet potatoes can hold extra moisture, and returning them briefly to the warm pan helps create a thicker, creamier mash. Taste the dish before serving and adjust carefully: more lemon juice will make it brighter, while more mustard will make it sharper and more savory.
If you are serving this sweet potato side dish with roasted meats, the tangy lemon and mustard help balance richer main courses. The recipe is also easy to scale if you need more servings, but the seasoning should still be adjusted to taste at the end.