Peanut Butter Cake with Chocolate Frosting

Peanut butter cup lovers will rave about this cake, it's a delicious peanut butter cake enrobed in rich chocolate frosting. A definitely distinctive flavor, peanut butter cake is everything you want in a cake including the chocolate!

Ingredients:

Cake Ingredients:
1 cup all-purpose flour
1 cup plus 2 Tablespoons sugar
3 1/2 teaspoons baking powder
1 teaspoon salt
2 cups graham cracker crumbs
3/4 cup peanut butter 
1/2 cup shortening
1/2 cup semi-sweet chocolate chips (optional)
1 cup plus 2 Tablespoons milk
1 teaspoon vanilla extract
3 eggs

Frosting Ingredients:
2 cups confectioners' sugar
2 Tablespoons cocoa
8 Tablespoons (1 stick) butter
1/3 cup heavy cream
1/2 cup peanuts, salted
2 teaspoons vanilla extract

source Recipe : here,