Simmered Purple Sweet Potato with Coconut and Brown Sugar

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A sweet and tender Okinawan purple sweet potato dish simmered gently in coconut milk and brown sugar for a naturally vibrant dessert. This Japanese-inspired recipe (vegan), ready in about 40 minutes, layers coconut milk, brown sugar, water into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 200 calories and feeds 3, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 30 min Serves 3 Japanese cuisine 200 cal/serving
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Ingredients

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Instructions

  1. Step 1: Peel and cut 300g Okinawan purple sweet potato into 1-inch cubes.
  2. Step 2: In a medium saucepan, combine 1 cup coconut milk, 1/2 cup water, 3 tbsp brown sugar, and 1/8 tsp salt. Stir over medium heat until the sugar dissolves and the mixture starts to simmer.
  3. Step 3: Add the cubed sweet potatoes to the saucepan, cover, and simmer gently on low heat for 20-25 minutes until the sweet potatoes are tender when pierced with a fork.
  4. Step 4: Remove the lid and simmer uncovered for 5 more minutes to thicken the sauce slightly.
  5. Step 5: Serve warm topped with 1 tsp toasted sesame seeds if desired.

Frequently asked questions

How long does Simmered Purple Sweet Potato with Coconut and Brown Sugar take to make?

Total time is about 40 minutes (10 min prep + 30 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover Simmered Purple Sweet Potato with Coconut and Brown Sugar?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in Simmered Purple Sweet Potato with Coconut and Brown Sugar?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Simmered Purple Sweet Potato with Coconut and Brown Sugar for a different number of people?

The recipe is written for 3 servings. Multiply each ingredient by (your serving target / 3). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Simmered Purple Sweet Potato with Coconut and Brown Sugar vegan?

Yes — this recipe is tagged vegan based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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