In a large mixing bowl, sift together 1 1/4 cup all-purpose flour, 1 tsp baking powder, and 1/4 tsp of table salt. Whisk this together to mix.

In the bowl of your stand mixer, add in 4 tbsp of softened unsalted butter (sitting at room temperature for about 30 to 1 hour) and 1/3 cup white granulated sugar. With a paddle attachment, mix on medium speed till they are combined and fluffy, about 1 minute. Scrape down the bowl as needed,

Add in 1 egg, 1/4 cup of ube halaya (from a jar, which is already sweetened), 1 1/2 tsp ube extract and 2 drops of purple food coloring. We use gel paste. If you're using liquid food coloring, you might have to use more to attain the same coloring. Mix these ingredients on medium-low speed just until combined. Scrape down the bowl as needed.

Turn the speed to low, and carefully add in the dry ingredients, and continue mixing until just combined. Detach the bowl from the stand mixer, scrape down the bowl as needed, and fold in any unmixed dry ingredients from the sides until the mixture is uniform.

Cover with plastic wrap, and rest in the fridge overnight (you can leave this dough in the fridge up to 3 days). Leaving the dough to chill and harden overnight is necessary to make tall thicker
crinkle cookies and prevent the cookies from overspreading when they bake.

When your dough has been chilled overnight (minimum) and you're ready to bake the cookies, preheat your oven to 350 F (175 C). Line a big sheet pan (we're using a 13" x 18" pan). Measure out 2 tbsp of granulated sugar into one small bowl and 1/2 cup of powdered sugar into another small bowl.

Using a round tablespoon measure for scooping, scoop the chilled dough so you have a heaping tablespoon, about 1.5 tbsp worth of dough. Then with your cupped palms, form them into spheres. The spheres should be approximately 1 inch in diameter. Then roll the formed dough sphere first in the bowl of granulated sugar, just a light layer of granulated sugar. This will help absorb any extra moisture and prevent the subsequent coat of powdered sugar from melting. Then roll it in the bowl of powdered sugar so they are completely and generously covered with powdered sugar, and place them on the prepared baking sheet, about 2 inches apart.

Repeat this till you have used up all the dough. This should make about 16 to 18 cookies, depending on the size of your dough spheres.

Bake these in the preheated oven at 350 F (175 C) for 12 to 15 minutes. Let the cookies cool on the sheet pan for 5 minutes, then transfer them to a wire rack to cool completely. Enjoy!

These ube crinkle cookies will keep for 1 week stored in an airtight container at room temperature.