Chocolate Peanut Butter Chip Cookies

1 1/4 cups butter, softened
2 cups sugar
2 eggs
2 tsp vanilla
2 cups flour
3/4 cup cocoa
1 tsp baking soda
1/2 tsp salt
10oz pkg peanut butter chips

Preheat oven to 350.
Beat the butter and sugar in a large bowl until fluffy. 
Beat in the eggs and vanilla, until fully incorporated. 
Combine the flour, cocoa, baking soda, and salt in a small bowl.
Gradually add the flour mixture into the butter mixture, beating completely.
Stir in the peanut butter chips.
Use a large ice cream scoop to form balls of dough onto a prepared baking sheet. 
Bake for 12-15 minutes.
Cool completely on a wire rack.