Fluffy Pineapple Buns (Bolo Bao) Recipe

At the beginning of quarantine of 2020,I jumped on the bread making bandwagon right away. One of the first things I made was these Kabocha Pineapple Buns. While decent at the time, the tops of the buns didn’t crackle the way they should. Almost a year later, after a lot of research, trial and error, and tears I’ve finally made a pineapple bun that I’m very happy with. The bread is soft and fluffy and cookie crust has that signature crackle. Check out adapted fluffy pineapple buns recipe below!

Fluffy Pineapple Buns (Bolo Bao)

For this attempt, I kneaded the dough by hand, but I highly recommend using a dough hook and stand mixer. It took me close to one hour and three broken nails to reach the necessary texture. Another pro tip is to use bread flour if you have it, but all purpose works fine as well. 

Fluffy Pineapple Buns (Bolo Bao)

One of the hallmarks of buns from Asian bakeries is their soft and fluffy texture. In the past the buns I’ve made were fluffy the day of, but would lose the fluffiness the next day. The secret to maintaining the fluffy texture is using Tangzhong (water roux) method. Tangzhong is a yeast bread technique. It involves cooking flour and water together to create a thick slurry prior to adding the remaining ingredients, resulting in soft, fluffy bread. I have always been hesitant to try because most recipes online require you to prepare this the night before, but this recipe uses the microwave and the result is just as good.

How to Make Fluffy Buns

This is not a difficult recipe, but it is time consuming, so I would set aside a solid half day if you are attempting this. I’ve used the milk bread recipe posted by Chantel on her baking IG.

To start you’ll need to make the tangzhong. In a microwave safe bowl combine bread flour (or all purpose flour) with water. Stir the ingredients to combine and put in the microwave for 30 seconds. Stir and then place back in the microwave for another 30 seconds until it is a paste. Wrap and set aside to cool to room temperature.

To start you’ll need to make the tangzhong. In a microwave safe bowl combine bread flour (or all purpose flour) with water. Stir the ingredients to combine and put in the microwave for 30 seconds. Stir and then place back in the microwave for another 30 seconds until it is a paste. Wrap and set aside to cool to room temperature.

For the bread, combine your warm milk, egg, flour, yeast, sugar, salt and cooled tangzhong in a large bowl of your stand mixer with a dough hook. If you don’t have one, you can knead this by hand but use a plastic glove because the dough is very sticky!

Knead on low-medium or knead by hand for 15 minutes or so until it comes together in a ball and the dough is smooth and stretchy. Once it’s smooth and stretchy, add your softened butter and keep kneading on medium/knead by hand for another 15 minutes until it can pass the window-pane test. The dough should be soft, super smooth and very stretchy at this point.

Cover the bowl with plastic wrap and let it rise for 1 hour in a warm place. I usually stick mine in the microwave or my oven.

Creating the Signature Pineapple Topping

While that is resting you can prepare the cookie topping. I used the recipe from Omnivore’s Cookbook, but half the recipe so there won’t be extra topping.

After an hour take your dough out and punch down the center. Divide the dough into 60g portions (will yield approximately 12 buns) Place 6 to a pan and top with your cut out cookie topping, and cover to let proof for another 30-40 minutes.

Fluffy Pineapple Buns (Bolo Bao)

Preheat your oven to 350°F and prepare your egg wash (egg yolk, milk and sugar). Brush a thin coat on the cookie disk and let it dry before applying a second thin layer for an extra shiny crust. Bake for 15 minutes until golden brown and then serve!

Fluffy Pineapple Buns (Bolo Bao)

Hong Kong style pineapple buns with a soft and fluffy bun and a buttery and crisp 'pineapple' crust.
Prep Time 2 hours
Cook Time 15 minutes

Ingredients
  

Tangzhong

  • 3 tbsp bread flour or all purpose flour
  • 1/2 cup water

Soft and Fluffy Milk Buns

  • 1/2 cup warm milk
  • 1 large egg
  • 2 2/3 cup bread flour or all purpose flour
  • 2 tsp instant yeast
  • 1/3 cup sugar
  • 1/2 tsp salt
  • prepared tangzhong
  • 2 tbsp butter (room temperature)

Pineapple Crust Topping

  • 2 tbsp butter
  • 1 tsp milk
  • 1 egg yolk
  • 1/2 tsp vanilla extract
  • 1/3 cup sugar
  • 1 /2 cup all purpose flour
  • 1/4 tsp baking powder
  • 1/4 tsp baking soda
  • 1 pinch of salt

Egg Wash

  • 1 egg
  • 2 tsp milk
  • 1 tsp sugar

Instructions
 

How to make Tangzhong

  • Combine the water and flour in a microwave-safe bowl
  • Heat the mixture in the microwave stirring every 30 seconds until it is thick like a paste (approximately two times)
  • Cover and set aside to cool to room temperature.

How to make Fluffy Milk Buns

  • Combine your warm milk, egg, flour, yeast, sugar, salt and cooled tangzhong in a large bowl of your stand mixer with a dough hook. If you don't have one, you can knead this by hand but use a plastic glove because the dough is very sticky!
  • Knead on low-medium or knead by hand for 15 minutes or so until it comes together in a ball and the dough is smooth and stretchy.
  • Once your dough is smooth and stretchy, add your softened butter and keep kneading on medium/knead by hand for another 15 minutes until it can pass the window-pane test.
  • Cover the bowl with plastic wrap and let it rise for 1 hour in a warm place.

How to make Pineapple Crust Topping

  • Melt your butter in a microwave safe bowl. Add milk, egg yolk, vanilla, and sugar. Stir until combined.
  • Add the dry ingredients and stir to combine.
  • Press the into a log and wrap with cling film. Shape it into a cylinder and place in fridge to chill.

Assembling your Pineapple Buns

  • Take your dough and punch it down. Shape the dough into 60g dough balls and shape into round buns. Cover with a dish cloth and let buns proof for another 30-40 minutes.
  • Take your cookie topping out of the fridge and slice into 12 circles. Place each disk between plastic wrap and roll it out until it is a 1/4 inch thick.
  • Preheat your oven to 350°F. While the oven is heating up, place one cookie disk on each bun.
  • Brush your egg wash thinly on the top of each bun. Let it dry and apply a second thin layer.
  • Bake in oven until golden brown for 15 minutes.

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