Instant Pot Bao Recipe: Steamed Pillows of Softness in Minutes

I’ve streamlined the traditional bao-making process for the Instant Pot, delivering soft, fluffy steamed buns with minimal effort.

This method cuts hours of proofing and steaming down to a fraction of the time while maintaining authentic texture and flavor. No special equipment needed—just your Instant Pot and a few simple ingredients.

Ingredients for Instant Pot Bao

Soft, fluffy steamed buns start with these pantry staples and a few minutes of prep.

The flour is the foundation here—King Arthur or Gold Medal all-purpose both work beautifully. Instant yeast is ideal for the quick rise, but active dry yeast (proofed first in warm water with sugar) will also work if that’s what you have. Warm water temperature is critical: 110°F maximizes yeast activity without killing it. Vegetable oil keeps the dough tender, and I prefer a neutral oil like canola or avocado for this.

No instant yeast? Use active dry yeast but add 5-10 minutes to the proofing time. Out of all-purpose flour? Bread flour works too, though the buns may be slightly denser. For a touch of sweetness, honey can replace the sugar at a 1:1 ratio. If you’re avoiding vinegar, a squeeze of lemon juice works as a substitute—it’s just for balancing the dough’s flavor.

The dough can rest in the fridge for up to 24 hours if you want to prep ahead. Once steamed, bao are best served immediately but can be reheated in the Instant Pot with a splash of water for 2-3 minutes. Leftovers keep in the fridge for 3 days.

Step-by-Step Instructions for Instant Pot Bao

Master the technique for perfectly fluffy steamed buns with this efficient method.

Step 1: Activate the Yeast and Prepare Wet Ingredients

In the Instant Pot insert, whisk together the 1 cup Warm Water, 3 tbsp Granulated Sugar, and 2.25 tsp Instant Yeast. Let this mixture sit for 5-7 minutes until it becomes frothy and cloudy—this visual confirmation means the yeast is active and ready to work its magic.

Once the yeast mixture is bubbling, stir in the 2 tbsp Vegetable Oil and 1 tbsp White Vinegar. The vinegar might seem unusual, but it’s the secret to balancing the dough’s flavor and ensuring a tender crumb. The mixture will look slightly separated, but that’s perfectly normal at this stage.

Step 2: Combine Dry Ingredients and Form the Dough

In a large mixing bowl, sift together the 3 cups All-Purpose Flour, 1.5 tsp Baking Powder, and 0.5 tsp Salt. The baking powder adds an extra lift to the buns, complementing the yeast’s action for that signature pillowy texture.

Pour the yeast mixture into the dry ingredients and stir with a wooden spoon until a shaggy dough forms. It will be slightly sticky but should pull away from the sides of the bowl. If it feels too dry, add a splash of warm water; if too wet, dust in a bit more flour. Knead the dough gently for 2 minutes until smooth and elastic.

Step 3: Proof the Dough in the Instant Pot

Lightly grease the Instant Pot insert with a bit of extra vegetable oil, then place the dough inside. Cover the pot with its lid (but do not seal it) and set it to the “Yogurt” function for 1 hour. The dough should double in size, becoming puffy and soft to the touch.

If your Instant Pot lacks a yogurt setting, use the “Keep Warm” function instead. The consistent, warm environment is ideal for proofing. Resist the urge to open the lid—disturbing the dough during this stage can cause it to deflate and affect the final rise.

Step 4: Shape the Bao and Prepare for Steaming

Once the dough has risen, gently punch it down to release the air. Turn it out onto a lightly floured surface and divide it into 12 equal portions. Roll each piece into a ball, then flatten slightly into a 3-inch circle with a rolling pin, keeping the edges thinner than the center.

Cut the 1 sheet Parchment Paper into 12 squares roughly 4 inches each. Dust each square lightly with 2 tbsp Cornstarch to prevent sticking. Place each dough circle on a square, then fold it in half to create the classic bao shape. Press the edges gently to seal.

Step 5: Steam the Bao to Perfection

Add 1 cup of water to the Instant Pot insert and place the trivet inside. Arrange the bao in a single layer on the trivet, ensuring they don’t touch each other (they’ll expand). Secure the lid, set the valve to “Sealing,” and steam on high pressure for 8 minutes.

After steaming, allow the pressure to release naturally for 5 minutes, then quick-release any remaining pressure. Carefully remove the lid and let the bao cool for 2 minutes before serving. They should be glossy, soft, and slightly sticky to the touch. Serve warm with your favorite fillings or as a side.

Storing and Reheating Leftovers

Refrigerator Storage

Once cooled, place bao in an airtight container with parchment between layers to prevent sticking. They’ll stay fresh at 40°F or below for up to 3 days. The texture remains soft but may slightly densify. ❄️

Freezer Storage

For longer storage, freeze steamed bao in a single layer first, then transfer to a freezer bag. Squeeze out excess air to prevent freezer burn. They’ll keep for up to 1 month. Thaw overnight in the fridge before reheating.

Instant Pot Reheating

Add ½ cup water to the Instant Pot, place the trivet inside, and arrange bao in a single layer. Steam on high pressure for 2-3 minutes, then natural release for 5 minutes. This restores their pillowy texture beautifully. 🔥

Microwave Reheating

Wrap individual bao in a damp paper towel and microwave on 50% power for 30-45 seconds. The steam from the towel revives the softness. Avoid high power, which can make them rubbery.

Reviving Stale Bao

If your bao have dried out, sprinkle them lightly with water and steam in the Instant Pot for 1-2 minutes. This trick works wonders for leftovers that have lost their moisture.

Frequently Asked Questions