Step 1

Preheat oven to 350 F. Line an 8 x8-inch baking pan with parchment paper.

Step 2

In the bowl of a stand mixer, cream the butter and brown sugar together for 2 minutes on medium speed.

Step 3

Add the egg, vanilla, baking powder, and salt. Mix until just combined, then scrape down sides of the bowl.

Step 4

Add the flour, mix on low speed until just combined. Stir in the white chocolate chips and 1/2 cup sprinkles.

Step 5

Press the dough into the prepared pan, then top with the additional 2 tablespoons of sprinkles.

Step 6

Bake for 20 25 minutes or until lightly golden brown around the edges.

Step 7

Let them cool in the pan on a wire rack

Step 8

These bars will keep for 3 days tightly wrapped or could be frozen for longer storage.