Fluffy Peanut Butter Buttercream Frosting

This light, fluffy, sweet, and salty buttercream gets piled onto two gorgeous layers of my moist and tender One Bowl Chocolate Cake. Top it off with some mini peanut butter cups and serve it up for a special occasion or an everyday treat.

Fluffy Peanut Butter Buttercream Frosting 
((Printable Recipe))

Ingredients:

2 layers of chocolate cake (find my recipe here)
mini peanut butter cups (for topping)
1 stick room temperature unsalted butter
1/4 cup vegetable shortening
3/4 cup natural creamy peanut butter (I used Smucker's)
4-5 cups confectioner's (powdered) sugar
1 teaspoon vanilla extract
generous pinch of salt
4-6 tablespoons whole milk or heavy cream

Directions:
1. Beat the butter, shortening, peanut butter together until light and fluffy.
2. Add the salt and vanilla and mix.
3. Add 4 cups the powdered sugar alternately with 4 tablespoons of milk. (I like to have extra milk and sugar on hand in case the frosting needs to be adjusted for consistency.)
4. Beat until light and fluffy. (For a more traditional frosting, do not beat as long and use closer to 2 tablespoons of milk for a stiffer frosting to spread or pipe.)
5. Divide the frosting in half between the two layers of cake.
6. Top with mini peanut butter cups (optional) and enjoy!