Wilton's Chocolate buttercream frosting, slightly adapted because my mom has a student who cannot consume dairy.
Chocolate Buttercream Frosting adapted from Wilton.com
1/2 cup shortening
1/2 cup dairy free margarine
3 ounces melted and cooled bittersweet chocolate (I used 70 percent cacao)
4 cups powdered sugar
1 teaspoon vanilla
4-5 tablespoons of water
Beat together the shortening and margarine until creamy. Add in the melted chocolate and beat until combined. Slowly add the powdered sugar. Add vanilla. Add as much water as needed until the frosting is the desired consistency.