Chocolate Cupcakes with Peanut Butter Buttercream Frosting

INGREDIENTS

2 1/3 cups

all purpose flour

1/3 cup

unsweetened cocoa

3 tsp

baking powder

1/2 tsp

kosher salt

1 1/2 cups

granulated sugar

( 3.9 ounce ) package of instant chocolate pudding

1/2 cup

butter , softened at room temperature and cubed

1/2 cup

milk

1 cup

sour cream

large eggs

1 tsp

vanilla extract

1/3 cup

butter at room temperature

1/3 cup

vegetable shortening (like Crisco)

1 cup

peanut butter

1 lb

powdered sugar (about 4 cup)

kosher salt

1 tsp

pure vanilla extract

to 6 tablespoons milk

Garnish: Chopped peanuts and chocolate sprinkles , optional