Nest Cupcakes

I used my trusty chocolate cupcake recipe...
Did a peanut butter frosting, and a peanut butter/chocolate filling
Peanut butter frosting:
2 sticks of butter
2 c peanut butter
1 2 pound bag powdered sugar
2 tsp vanilla
2/3 c milk
1/2 tsp salt

Filling:
14 oz marshmallow fluff
12 oz semi sweet chocolate chips
1/2 c peanut butter
-melt together