Preheat your oven to 350 degrees.

In a microwave safe bowl melt the butter and transfer into a mixing bowl. Add the brown sugar and whisk to combine. Add the vanilla and egg and continue to whisk until totally incorporated.

Add the dry ingredients; flour, baking powder, salt, and baking soda and stir to combine.

Add the butterscotch and chocolate chips and mix together.

Grease a 8x8 baking dish, and line with parchment paper. Evenly distribute the batter and tap the dish on the counter making sure all the air bubbles are out. Bake for 20-22 minutes in a 350 degree oven or until you stick a knife in and it comes out clean.

Let cool slightly and serve as needed