Preheat the oven to 350 degrees F
In a large bowl, combine the butter, sugars, egg, & vanilla extract together. Mix until thoroughly combined.
Add the flour, baking powder, nutmeg, & salt
Toss in the pecans & butterscotch morsels
Separate 1/2 of the dough. flatten the dough & create a well in the middle with your hands (resembling a crater)
Spread the cookie butter in the middle & cover it with the remaining dough (pinch the edges)
Bake for 14-15 minutes, or until dark brown edges form around the cookie