Preheat oven to 350 degrees and adjust racks to upper and lower third positions.

In large bowl whisk together the flour, baking powder, baking soda and salt. In a separate bowl, whisk together the sugar, yogurt, egg and vanilla.

Dump the wet ingredients into the bowl with the flour mixture. Add the blueberries and coconut chips. Fold together with a wooden spoon or spatula until ingredients are well combined.

Scoop about 1 tablespoon of rounded dough balls onto cookies sheets lined with parchment paper or silicone baking mats. Top raw dough with sprinkles, if desired.

Bake for about 10 minutes, or until edges of cookies are just beginning to brown. They won't spread a lot and will look pretty "cakey" when finished.