01 -
Heat your oven to 350°F (175°C). Put parchment paper on two baking trays and set them aside.
02 -
In a stand mixer bowl with the paddle tool (or handheld mixer), mix the butter and sugar until smooth—it takes about 3 minutes.
03 -
Drop in the egg and egg yolk one at a time. Mix well, scraping now and then so everything blends nicely.
04 -
In another bowl, whisk the flour, salt, and baking soda so it's one even mixture.
05 -
Add your whisked dry stuff to the bowl with the wet mixture. Keep the mixer on low until the dough starts forming. Don’t overdo it.
06 -
Divide the finished dough into two halves. In one, mix in the ube extract until it’s the same color all through. For the other, add and mix through the sifted matcha powder until it’s even.
07 -
Use a #50 scoop (just over 1 tablespoon) to create portions of each dough flavor. Matcha and ube scoops will weigh around 25 g each.
08 -
Take one scoop of the matcha dough and combine it with one scoop of the ube dough. Roll gently into a ball, then coat fully in sugar. Repeat for all dough portions.
09 -
Arrange six cookies per baking tray with space in between since they'll flatten out while baking.
10 -
Bake the cookies one tray at a time on the middle oven rack. Keep them in for about 10–12 minutes until the edges lightly set and the centers puff up. Let trays cool in between batches.
11 -
Let the cookies cool on the tray for five minutes before moving them to a cooling rack to finish.