Combine the sugars, flour, baking powder, salt, and sprinkles in the bowl of your mixer, fitted with a paddle attachment. Mix on low speed until combined.
Add the oil and vanilla and mix. The wet ingredients will help the dry ingredients form small clusters. Mix until this happens.
Spread the clusters on parchment or silpat lined cookie sheet. Bake for 20 minutes, breaking them up occasionally if needed. The crumbs should be still slightly moist to the touch when down, they dry and harden as they cool off.
Cool the crumbs completely before using in a recipe. If not using, store in an air-tight container for up to 1 week at room temperature or freeze.
Recipe by Just a Smidgen at https://justasmidgen.com/2012/04/05/momofuku-funfetti-cookies/