These vibrant mashed purple sweet potatoes are as creamy as they are stunning, and they come together fast on a weeknight. With coconut milk and a touch of butter, you get a silky, naturally sweet mash that pairs with everything from roast chicken to salmon.
Quick & Easy Mashed Purple Sweet Potatoes
Equipment
- 1 Large pot with lid or Dutch oven
- 1 Steamer basket (optional, preferred for best color)
- 1 Saucepan to warm coconut milk and butter
- 1 Potato masher or ricer
- 1 Chef’s knife
- 1 Cutting Board
- 1 Measuring cups and spoons
Ingredients
Main Mash
- 2 lb purple sweet potatoes peeled and cut into 1-inch cubes (Stokes Purple or Okinawan both work)
- 0.5 cup unsweetened coconut milk warmed; plus more as needed (up to 3/4 cup)
- 2 tbsp unsalted butter or vegan butter; or use 2 tbsp extra-virgin olive oil
- 1 tbsp pure maple syrup optional, to taste; up to 2 tbsp
- 0.5 tsp fine sea salt plus more to taste
- 0.25 tsp freshly ground black pepper
- 1 tsp lemon juice or apple cider vinegar divided; add a splash to the cooking water to keep the color bright
Optional Flavor Boosts
- 1 small garlic clove minced; optional
- 0.5 tsp garlic powder optional
- 0.25 tsp ground ginger optional
- 1 pinch cinnamon optional
Garnish
- chopped chives for garnish
- toasted coconut flakes for garnish
- toasted sesame seeds for garnish
- extra-virgin olive oil for drizzling
Instructions
- Peel and cut the purple sweet potatoes into 1 inch cubes for even cooking. Rinse briefly to remove excess starch.
- For best color, steam: place potatoes in a steamer over simmering water, add a splash of lemon juice or vinegar to the water, cover, and steam 15 to 20 minutes until knife-tender. Or boil in lightly salted water with 1 tsp vinegar for 12 to 16 minutes until tender.
- In a small saucepan, gently warm the coconut milk with the butter until melted and steamy. If using garlic, let it sit in the warm liquid for 2 to 3 minutes to mellow.
- Drain well. Return potatoes to the hot pot over low heat for 1 minute, stirring, to evaporate excess moisture. This keeps the mash fluffy, not watery.
- Mash with a potato masher or press through a ricer for ultra smooth results. Add about 1/2 cup warm coconut milk–butter mixture, the salt, pepper, and about 1/2 tsp lemon juice. Mash, then add more liquid as needed for a silky texture. Sweeten lightly with maple if desired. Adjust salt, acidity, and spices to taste.
- Transfer to a warm bowl and garnish with chives, toasted coconut, or a drizzle of olive oil. Serve hot.
- Add 1 cup water to the Instant Pot with a trivet, place potatoes in a steamer basket, cook on Manual High for 8 minutes, quick release, then proceed with mashing.
Notes
Why You’ll Love This Quick & Easy Mashed Purple Sweet Potatoes
- Ready in about 25 minutes with simple pantry ingredients.
- Ultra creamy texture with gorgeous, jewel-toned color.
- Naturally sweet and versatile – delicious with savory mains.
- Dairy optional and easy to make vegan or paleo.
- Foolproof method that preserves that vivid purple hue.
Quick & Easy Mashed Purple Sweet Potatoes Ingredients & Substitutions
- 2 lb purple sweet potatoes, peeled and cut into 1 inch cubes (Stokes Purple or Okinawan both work)
- 1/2 to 3/4 cup unsweetened coconut milk, warmed (or warm whole milk, half-and-half, or cream)
- 2 tbsp unsalted butter or vegan butter (or 2 tbsp extra-virgin olive oil)
- 1 to 2 tbsp pure maple syrup, optional to taste (or honey or brown sugar)
- 1/2 tsp fine sea salt, plus more to taste
- 1/4 tsp freshly ground black pepper
- 1 tsp lemon juice or apple cider vinegar, divided – a splash in the cooking water helps keep the color bright
- Optional flavor boosts: 1 small garlic clove minced or 1/2 tsp garlic powder, 1/4 tsp ground ginger, pinch cinnamon
- Garnish: chopped chives, toasted coconut flakes, sesame seeds, or a drizzle of olive oil
Substitutions: Swap coconut milk for cashew cream or dairy. Use ghee for a buttery, lactose-free richness. For a sweeter profile, add extra maple; for savory, skip sweetener and add more salt, pepper, and herbs.
Step-by-Step Instructions to Make Quick & Easy Mashed Purple Sweet Potatoes
1. Prep the potatoes
Peel and cut the purple sweet potatoes into 1 inch cubes for even cooking. Rinse briefly to remove excess starch.
2. Cook to tender
Steaming preserves color best: place in a steamer over simmering water, add a splash of lemon juice or vinegar to the water, cover, and steam 15 to 20 minutes until knife-tender. Or boil in lightly salted water with 1 tsp vinegar for 12 to 16 minutes until tender.
3. Warm the liquids
In a small saucepan, gently warm the coconut milk with the butter until melted and steamy. If using garlic, let it sit in the warm liquid for 2 to 3 minutes to mellow.
4. Drain and dry
Drain well. Return potatoes to the hot pot over low heat for 1 minute, stirring, to evaporate excess moisture. This step keeps the mash fluffy, not watery.
5. Mash and season
Mash with a potato masher or press through a ricer for ultra smooth results. Add about 1/2 cup warm coconut milk-butter mixture, salt, pepper, and 1/2 tsp lemon juice. Mash, then add more liquid as needed for a silky texture. Sweeten lightly with maple if desired. Adjust salt, acidity, and spices to taste.
6. Finish and serve
Transfer to a warm bowl and garnish with chives, toasted coconut, or a drizzle of olive oil. Serve hot.
Tips for Success
- Choose the right variety: Stokes Purple is drier and perfect for mashing; add a touch more liquid if using Okinawan, which can be starchier.
- Add a little acid: a splash of lemon juice or vinegar in the cooking water helps keep the color vivid.
- Dry the potatoes: returning them to the pot for a minute removes excess moisture for fluffier mash.
- Warm your liquid: warm coconut milk blends in smoothly and prevents gummy texture.
- Do not overmix: mash by hand or use a ricer for the creamiest, non-gluey texture.
Variations of Quick & Easy Mashed Purple Sweet Potatoes
- Garlic Herb: stir in 1 tbsp finely chopped parsley and 1 tsp thyme with the warm butter.
- Spiced Maple: add 1/2 tsp cinnamon and a pinch of nutmeg with 1 to 2 tbsp maple syrup.
- Miso Butter: whisk 1 tsp white miso into the warm butter-coconut milk for umami depth.
- Tahini Sesame: finish with 1 tbsp tahini and a sprinkle of toasted sesame seeds.
- Coconut Lime: add 1 tsp lime zest and extra lime juice for a bright, tropical twist.
Serving Suggestions: What to Pair with Quick & Easy Mashed Purple Sweet Potatoes
- Roast chicken, turkey, or pork tenderloin
- Seared salmon or miso-glazed cod
- Braised short ribs or rosemary lamb chops
- Crisp salads with citrus vinaigrette to balance the natural sweetness
- Holiday table alongside green beans, gravy, and cranberry sauce
Storage & Reheating Instructions
Refrigerate leftovers in an airtight container for up to 4 days. For longer storage, freeze up to 2 months in freezer-safe bags flattened for quick thawing.
Reheat on the stovetop over low heat with a splash of coconut milk or water, stirring gently until hot. Or microwave in short bursts, stirring between each, until steamy. If the mash is too thick, loosen with warm liquid; if too loose, stir over low heat to reduce.
Make-ahead: Mash up to 2 days in advance. Reheat gently and refresh with a drizzle of warm coconut milk and a pinch of salt.
Memories Made Around the Table
The first time I served these, my friends went quiet for a moment, then asked what made the color so magical. We passed the bowl twice, and there were no leftovers to put away.
FAQs
Are purple sweet potatoes the same as ube? No. Ube is a Filipino purple yam with different flavor and moisture. Purple sweet potatoes are denser and less watery, perfect for savory mash.
Can I make this dairy free? Yes. Use coconut milk plus olive oil or vegan butter. It will be just as creamy.
Instant Pot method? Add 1 cup water to the pot with a trivet, place potatoes in a steamer basket, cook on Manual High for 8 minutes, quick release, then proceed with mashing.
Do I have to peel the potatoes? Peeling yields the smoothest texture, but you can scrub and steam with skins on, then slip them off after cooking.
How do I keep the color bright? Steam when possible and add a small splash of lemon juice or vinegar to the cooking water. Avoid baking soda or alkaline additives.
Final Thoughts
Quick & Easy Mashed Purple Sweet Potatoes bring vibrant color and cozy comfort to any plate with minimal effort. If you make them, leave a comment with your favorite variation so we can inspire each other in the kitchen.