Bean Paste Buns Recipe: Steamed Dumplings with Nutty-Sweet Filling

This bean paste bun recipe delivers the perfect balance of chewy dough and nutty-sweet filling that makes every bite unforgettable. 🌟 The secret lies in a simple yet precise dough that steams into tender, pillowy perfection, while the bean paste filling—whether red, black, or mung—adds rich, earthy depth that pairs beautifully with the soft exterior.

These buns are a staple during Lunar New Year celebrations, symbolizing prosperity and sweetness for the year ahead.

The dough comes together with just four ingredients: all-purpose flour, yeast, warm water, and a touch of sugar to encourage a light rise.

The filling requires equal parts attention—whether you opt for the classic sweet red bean paste, fermented black bean for umami richness, or mung bean for a lighter texture. Each type transforms the buns into something uniquely satisfying, with the filling staying moist and flavorful even after steaming.

Assembly is where the magic happens. Rolling the dough into thin circles, adding a spoonful of filling, and sealing the edges with precision ensures the buns steam evenly, creating a golden-brown crust that contrasts with the soft, fluffy interior.

A light egg wash before steaming adds a subtle sheen, while optional toppings like sesame seeds or a drizzle of syrup elevate them to festive perfection.

Perfect for family gatherings, holiday feasts, or a special treat, these bean paste buns are as rewarding to make as they are to eat. With just a steamer and a little patience, you’ll create a dish that feels both nostalgic and impressively homemade. Let’s get started!

Ingredients for bean paste bun

Twelve ingredients transform into twelve perfect buns—each with a tender, pillowy exterior and rich, nutty-sweet filling.

The flour is the foundation, so choose a high-quality all-purpose brand like King Arthur or Gold Medal for consistent results. Active dry yeast should be fresh—check the expiration date, as old yeast won’t activate properly. For the bean pastes, Asian grocery stores carry the best selection, with brands like Fu Chun or Haein offering reliable quality. If you’re using homemade paste, ensure it’s smooth and free of lumps for even distribution. The warm water temperature is critical—too hot kills the yeast, while too cold slows activation. Test it by dipping your finger in; it should feel warm but not hot to the touch.

No sweet red bean paste? Substitute mung bean paste for a lighter texture or black bean paste for deeper umami, though the flavor profile shifts noticeably. For the egg wash, vegetarian-friendly egg substitutes like aquafaba (chickpea brine) work well if needed. Toasting sesame seeds in a dry pan for 2-3 minutes enhances their aroma—skip this step if you’re short on time, but the flavor difference is worth it. If your dough feels too sticky, add an extra tablespoon of cornstarch or flour incrementally until it’s pliable but not wet. Overworking the dough can make the buns dense, so handle it gently during rolling.

Store unassembled dough in an airtight container with a damp towel for up to 24 hours in the fridge, though it’s best used fresh. Bean pastes keep indefinitely in the pantry, but once mixed into the buns, they’re best steamed immediately for optimal texture. Leftover buns reheat beautifully in a steamer for 10-15 minutes or wrapped in foil in a 350°F (175°C) oven for 5-7 minutes. For festive presentation, brush the tops with a light syrup made from equal parts sugar and water before serving. Freeze unsteamed buns between parchment paper for up to 1 month—steam directly from frozen, adding 2-3 extra minutes.

Step-by-step instructions for steamed bean paste buns

Master the art of these delicate dumplings with a perfect balance of fluffy dough and rich filling.

In a large mixing bowl, combine the 1.25 cups warm water (should feel like bathwater, 110°F/43°C) with the 0.5 tsp granulated sugar and 0.25 oz active dry yeast. Let it sit for 5-10 minutes until the mixture becomes frothy and bubbly—this confirms your yeast is alive and ready to work. If it doesn't bubble, your yeast is inactive and you'll need to start fresh.

Add the 4 cups all-purpose flour, 0.5 tsp salt, and 1 tbsp vegetable oil to the bowl. Using a wooden spoon or your hands, mix until a shaggy dough forms. The dough will be sticky, but that's normal—this is a wet dough that requires patience. Once combined, turn it out onto a lightly floured surface and knead gently for 5-7 minutes until smooth and elastic. You're not looking for a tight, firm dough here; the bean paste filling will add moisture, so the dough should remain soft and slightly tacky.

Return the kneaded dough to the bowl and let it rest for 20 minutes while you prepare the filling. In a separate bowl, combine the 1.5 cups sweet red bean paste, 1.5 cups fermented black bean paste, and 1.5 cups mung bean paste. Mix thoroughly until you achieve a smooth, homogeneous paste with no lumps. This mixture is the heart of your buns, providing that signature nutty-sweet flavor with umami depth.

After the dough rests, divide it into 12 equal portions (about 3.5 oz/100g each). Roll each portion into a 3-inch circle, keeping the edges slightly thicker than the center. Place 1 tablespoon of the bean paste mixture in the center of each circle. Gently fold the dough over the filling, sealing the edges tightly with a pinch of dough to prevent filling leakage during steaming. This is where precision matters—uneven sealing leads to messy buns.

Place each filled dough ball on a parchment-lined baking sheet, spacing them about 2 inches apart to prevent sticking. Cover the tray loosely with a damp kitchen towel and let the buns rest at room temperature for 30 minutes. This resting period allows the dough to relax and the filling to settle, making them easier to handle and ensuring they maintain their shape during steaming.

While the buns rest, prepare your steaming setup. Fill a large pot with 2 inches of water and bring it to a rolling boil over medium-high heat. Place a steamer basket or heatproof plate inside the pot, ensuring it's elevated above the water level. The buns should never touch the water during steaming, or they'll become soggy instead of fluffy.

Once the water reaches a full boil, carefully transfer the buns to the steamer basket. Cover with a clean kitchen towel to maintain humidity, then steam for 12-15 minutes until the buns are plump, golden at the edges, and the filling is fully heated through. The towel helps create a more even steam environment, preventing the tops from drying out while the bottoms steam properly.

Here's the critical checkpoint: lift the lid slightly after 10 minutes and check for doneness. The buns should be light and airy with just a hint of golden color on top. If they're not golden enough, steam for 1-2 minutes longer. Oversteaming will make them dense and gummy—watch closely during the final minutes. Remove the buns from the steamer and let them cool on a wire rack for 5 minutes before serving.

While the buns cool slightly, prepare the egg wash by beating the 1 whole large egg with 1 tablespoon water in a small bowl. Brush this mixture lightly over the tops of the buns for a subtle sheen. For garnish, toast the 2 tbsp sesame seeds in a dry skillet over medium heat for 2-3 minutes until golden and fragrant, then sprinkle them evenly over the buns.

Serve the bean paste buns warm, ideally within 30 minutes of steaming when the dough is at its most tender. Each bite should deliver a harmonious blend of fluffy, slightly chewy dough and the rich, complex flavors of the bean paste filling. The contrast between the soft exterior and the dense, flavorful center is what makes these buns so special—don't skip the resting time, as it's essential for achieving this perfect texture balance.

Essential equipment for bean paste bun

Steamer Essentials

Your steamer is the star of this recipe—never skip the proper setup. A bamboo steamer basket with perforated bottoms (like the Norpro 12-inch) works best, but a heatproof plate elevated on a metal rack also does the job.

The key is ensuring the buns never touch the water—place a trivet or metal rack inside your pot to keep them suspended. I use a stainless steel steamer insert from OXO for durability and even heat distribution. 🔥

If you don’t have a steamer, a large pot with a tight-fitting lid works in a pinch. Just make sure the water doesn’t boil over during steaming—2 inches of water is the sweet spot.

For extra insurance, place a damp kitchen towel over the buns while steaming to trap moisture and prevent drying.

Dough Tools

A rolling pin with a smooth surface (like the Lodge cast iron rolling pin) is a must for even, thin circles. Avoid wooden pins—they can tear the delicate dough.

For portioning, a bench scraper or digital kitchen scale (I love the OXO Good Grips) ensures consistent 3.5 oz/100g portions. A damp towel keeps dough from sticking while shaping, and a pastry brush helps apply the egg wash evenly for that golden sheen. 🥖

For sealing the edges, I find a small offset spatula or my fingers work best—press gently to create a tight seal without overworking the dough. If the filling leaks during steaming, it’s usually due to uneven sealing or overfilling. A light touch is key!

Bean Paste Prep

Smooth, lump-free bean paste is non-negotiable—food processors (like the Ninja FP101) or mortars and pestles work best for blending. If using store-bought pastes, check for aspirin or preservatives (common in cheaper brands)—they can alter flavor.

For homemade pastes, simmer dried beans in water with 1 tsp baking soda (for mung beans) until soft, then blend with 1 tbsp sugar for sweetness. A fine-mesh sieve helps strain out any grit. 🌱

Store pastes in airtight containers in the fridge for up to 2 weeks or freeze for 3 months. When mixing pastes (like red + black bean), use a rubber spatula to ensure even distribution—this prevents flavor pockets in your buns.

Optional Extras

A wire cooling rack keeps buns from getting soggy post-steam, while a small skillet toasts sesame seeds to perfection. For festive touches, a piping bag with a star tip lets you drizzle syrup in decorative patterns.

If you’re vegan, aquafaba (chickpea brine) replaces egg wash beautifully—just whisk 2 tbsp with 1 tsp sugar for shine. 💫

For large batches, a stand mixer with a dough hook (like the KitchenAid) speeds up kneading, but hand-mixing works fine too. Just don’t over-knead—this dough is delicate!

Frequently asked questions