Preheat oven to 350 degrees and line cookie sheet with parchment paper

In a medium bowl, mix until combined the flour, baking powder, and salt; set aside

In a standing mixer, beat together the butter, peanut butter, 3/4 C sugar, brown sugar, eggs, and vanilla until light and fluffy

Gradually beat in the dry ingredients until dough forms

Using a small ice cream scooper, scoop dough into 2 tbsp scoops onto the cookie sheet

Roll into balls

In a small bowl, mix together the remaining 3/4 C sugar and 3 tbsp ground cinnamon

Roll each ball in the cinnamon-sugar mixture

Place cookie dough balls onto the cookie sheet and bake for 13 minutes

Allow cooling before enjoying!