Egg Custard Buns are a popular Cantonese dim sum marked by ultra-smooth, soft bun with luscious, creamy salted egg yolk filling. Turns out, butternut squash is an excellent substitute for egg yolks, making these buns vegan-friendly and taste just as good!
### Step 1: Roast the Butternut Squash: Pre-heat the oven to 400 degrees F (200 degrees C). Start by splitting the squash in half and scooping out all the seeds & fibers. Place the squash flesh-side down on a parchment-lined baking tray. Roast the squash for 45-55 minutes, or until completely tender.
Roast the Butternut Squash: Pre-heat the oven to 400 degrees F (200 degrees C). Start by splitting the squash in half and scooping out all the seeds & fibers. Place the squash flesh-side down on a parchment-lined baking tray. Roast the squash for 45-55 minutes, or until completely tender.
### Step 2: Make the Custard Filling: Once the butternut squash has cooled completely, remove the flesh & mash with a fork. Run the puree through a fine mesh sieve. In a bowl, combine all the filling ingredients and whisk very well to combine. Add the mixture to a pot, and bring to a boil while stirring constantly until thickened. Place in the freezer for around 30 minutes to firm up. To know if the filling is firm enough, if you run your fork through it, it should crumble up and shouldn’t stick to your hands when you try to shape it. Run a fork through the filling to break it all up & roll into evenly sized balls that are 18-20 grams each (10 balls).
Make the Custard Filling: Once the butternut squash has cooled completely, remove the flesh & mash with a fork. Run the puree through a fine mesh sieve. In a bowl, combine all the filling ingredients and whisk very well to combine. Add the mixture to a pot, and bring to a boil while stirring constantly until thickened. Place in the freezer for around 30 minutes to firm up. To know if the filling is firm enough, if you run your fork through it, it should crumble up and shouldn’t stick to your hands when you try to shape it. Run a fork through the filling to break it all up & roll into evenly sized balls that are 18-20 grams each (10 balls).
### Step 3: Make the Dough: On your work surface, mix together flour, sugar, yeast, and baking powder. Make a well in the centre and slowly add water, stirring to incorporate. Note: this is a high hydration dough, so it will be sticky at first. You shouldn’t add any additional flour, otherwise your buns will turn out tough. Keep kneading and unsticking all the bits on the counter until the dough is smooth and the counter & your hands are clean.
Make the Dough: On your work surface, mix together flour, sugar, yeast, and baking powder. Make a well in the centre and slowly add water, stirring to incorporate. Note: this is a high hydration dough, so it will be sticky at first. You shouldn’t add any additional flour, otherwise your buns will turn out tough. Keep kneading and unsticking all the bits on the counter until the dough is smooth and the counter & your hands are clean.
### Step 4: Divide the Dough: Divide the dough into equally sized, 30-35 gram pieces (10 portions) Roll each portion into balls and set aside, covering loosely with cling film to prevent drying.
Divide the Dough: Divide the dough into equally sized, 30-35 gram pieces (10 portions) Roll each portion into balls and set aside, covering loosely with cling film to prevent drying.
### Step 5: Make the Buns: Work on one bun at a time. Take one dough ball and roll it out into a rectangular sheet, then fold it over, turn it 90 degrees, and repeat. Repeat this rolling & folding for 5 times. I first saw this done by a Chinese pastry chef — the technique yields a super smooth bun. At the end, roll the dough into a round shape (doesn’t have to be completely round) and place a ball of filling in the middle. Note: I usually keep all the filling in the fridge and take them out one at a time, so they don’t start melting too fast. Gather the dough to the top. Continue to twist until the top is sealed and a bit of extra dough remains. Remove the extra dough, turn the bun on its smooth side, and place on a piece of baking parchment.
Make the Buns: Work on one bun at a time. Take one dough ball and roll it out into a rectangular sheet, then fold it over, turn it 90 degrees, and repeat. Repeat this rolling & folding for 5 times. I first saw this done by a Chinese pastry chef — the technique yields a super smooth bun. At the end, roll the dough into a round shape (doesn’t have to be completely round) and place a ball of filling in the middle. Note: I usually keep all the filling in the fridge and take them out one at a time, so they don’t start melting too fast. Gather the dough to the top. Continue to twist until the top is sealed and a bit of extra dough remains. Remove the extra dough, turn the bun on its smooth side, and place on a piece of baking parchment.
### Step 6: Steam the Buns: Once you have about 5 buns ready, you can steam them as the first batch. First place them (with the baking parchment) into your steamer basket. Cover and let proof for 15-20 minutes, then steam for around 8 minutes. Serve immediately.
Steam the Buns: Once you have about 5 buns ready, you can steam them as the first batch. First place them (with the baking parchment) into your steamer basket. Cover and let proof for 15-20 minutes, then steam for around 8 minutes. Serve immediately.