NOTE: I used 3 eggs. In a bowl, combine flour, baking powder, and salt. Set aside.
Beat together sugar and oil.
Add 3 eggs then the ube extract.
Continue mixing the whole thing together.
Add in the ube jam. Keep on mixing.
Gradually add the flour mixture. Continue to mix until all ingredients are well-incorporated.
VOILA. The purple color looks beautiful. Cover the bowl with saran wrap then chill in the fridge for 3-4 hours or overnight. I recommend the latter.
Preheat oven to 350°. Pour the confectionery sugar in a plate. Form a ball or use a cookie scooper to form balls. Coat the cookie balls with confectionery sugar. Place the balls in a lined sheet pan. 1 dozen at a time.
Bake in the preheated oven, 12-15minutes. Carefully transfer each cookie crinkles in a cooling rack to cool completely. Repeat the process for the remaining cookie balls.
Transfer the cooled crinkles in a cookie jar or a serving platter.