Molten Pumpkin Steamed Buns — I Steam a Batch Every Couple of Days
By Vivian
Why You'll Love It
Autumn pumpkin is one of those things that's good however you cook it.
Steamed, in congee, or pan-fried as pumpkin cakes — I love them all.
But this new version is my favorite: pumpkin kneaded straight into the dough, with a cooked pumpkin filling inside that actually flows when you bite in.
The sweetness is just right, never cloying — even the kid who normally ignores plain buns ate two.
And it's much easier than it looks. A few simple steps, one trip to the steamer, done. Pumpkin is in season, cheap and sweet right now — give it a try.
Ingredients
| At a Glance | |
|---|---|
| 1 lb 2 oz (500 g) mature pumpkin (about 1¼ cups / 270 g for the dough, the rest for the filling) | ¼ cup (50 g) sugar |
| Pumpkin Dough | |
|---|---|
| 1 cup + 2 tbsp (270 g) pumpkin purée | 4¼ cups (500 g) all-purpose flour |
| 1¾ tsp (5 g) osmotolerant instant yeast | 2 tsp (10 ml) warm water |
| Molten Pumpkin Filling | |
|---|---|
| about 1 cup (230 g) remaining pumpkin purée | 6 tbsp (40 g) whole milk powder, 2½ tbsp (20 g) cornstarch |
Ingredient Notes
- Use a dense, dry pumpkin like kabocha or a mature sugar pumpkin — deeper color, less water, and the purée comes out sweeter and thicker.
- Let the purée cool completely before adding yeast. Anything above 104°F (40°C) will kill it.
- Once sugar reaches 10% of the flour weight, switch to osmotolerant yeast — regular yeast struggles to rise.
- Don't skip the cornstarch in the filling; that's what makes it flow without turning runny. Whole milk powder tastes best.
- All-purpose flour is right here — anything around 10–11% protein (regular dumpling flour) works fine.
Instructions
-
1
Peel and seed the pumpkin, slice it thin and steam until a chopstick slides through easily. Mash it smooth while hot, stir in ¼ cup (50 g) sugar, and let it cool completely.
-
2
Dissolve the yeast in the warm water. Put 1 cup + 2 tbsp (270 g) pumpkin purée in a large bowl, add the yeast water, then the 4¼ cups (500 g) flour. Stir with chopsticks until shaggy.
-
3
Knead by hand into a dough, cover, and rest it in the fridge for 10 minutes.
Knead again — after resting the flour has fully hydrated, so a few minutes gets it perfectly smooth.
Cover and let it rise somewhere warm until doubled.
-
4
To the remaining purée (about 1 cup / 230 g), add 6 tbsp (40 g) milk powder and 2½ tbsp (20 g) cornstarch and stir well.
Tip it into a nonstick pan and cook over low heat, stirring constantly, until thick. Turn off the heat and let it cool.
-
5
The dough should be visibly bigger and full of holes when you pull it open.
Knead it well to deflate, roll into a log and divide into even pieces.
-
6
Flatten one piece into a wrapper that's thick in the middle and thin at the edges.
Add some cooled pumpkin filling, gather and pinch it shut like a bun, then round it.
The second rise depends on temperature: 20–30 minutes in summer; in winter set the tray over a pot of warm water. Don't over-proof or the buns collapse.
-
7
Put the shaped buns in the steamer, cover, and let them rise again.
They're ready when the dough springs back slowly after a gentle press.
-
8
Bring the steamer water to a boil, add the buns and steam over high heat for 15 minutes. Turn off the heat and wait 3 minutes before opening.
-
9
Fresh out of the steamer they're soft and squishy in your hand.
Split one open and the filling is smooth, sweet and just barely flowing.
The wrapper is fluffy, the filling silky, sweet but not heavy — easy to eat two in a row.
Recipe Notes
Molten Pumpkin Steamed Buns
Mature pumpkin kneaded right into the dough, wrapped around a cooked pumpkin filling that flows when you bite in — soft, pillowy and molten in the middle.
Time Needed
Prep Ahead
- Steam the pumpkin and mash it while hot, then cool completely before kneading — hot purée kills the yeast.
- The filling can be made a day ahead; chilling it firm makes shaping much easier.
- 【Yield】1 lb 2 oz (500 g) pumpkin: about 1¼ cups (270 g) for the dough, roughly 1 cup (230 g) for the filling. 4¼ cups (500 g) flour makes about 10 medium buns. Adjust the ¼ cup (50 g) sugar by a tablespoon or two depending on how sweet your pumpkin is.
- 【Key ratios】Dough: flour to purée ≈ 500:270, with 1¾ tsp (5 g) osmotolerant yeast (about 1% of the flour). Filling: purée to milk powder to cornstarch ≈ 230:40:20.
- 【Heat】Cook the filling over low heat, scraping the bottom constantly, until thick and cohesive — it thickens more as it cools. Steam over high heat for 15 minutes once the water boils, then rest 3 minutes before opening.
- 【Rising】First rise to double (a finger poke should stay put). After shaping, rise to 1½ times until a light press springs back slowly — 20–30 minutes in summer, over warm water in winter.
- 【Storage & reheating】Cool, seal and freeze up to 2 weeks, or refrigerate 3 days. Re-steam 8–10 minutes straight from frozen.
- 【Common problems】Runny filling leaks and the tops collapse — cook the purée down properly. Tough wrappers usually mean too little water or lifting the lid too early.
Nutrition (per 100 g, estimated)
| Calories | about 249 kcal |
|---|---|
| Protein | about 6.5 g |
| Fat | about 2.5 g |
| Carbohydrates | about 50 g |
| of which sugars | about 12 g |
| Fiber | about 2 g |
| Sodium | about 40 mg |
Estimated from the ingredient amounts, not lab tested. One bun is about 2.8 oz (80 g), roughly 199 kcal, calculated at 4 / 9 / 4 kcal per g of protein / fat / carbs.