This sweet Vanilla Buttercream icing is perfect as a filling between cake layers, or top your yummy cupcakes!
Use your standing mixer with the flat beater attachment or your handheld mixer to cream together butter & shortening in a large mixing bowl. Add water and vanilla and beat together with your mixer on low speed until fully incorporated.
Add powdered sugar one cup at a time, beating with mixer on low/medium speed until fully mixed.
You can make your icing thinner by adding a little more water (just add one Tbs at a time), or thicker by adding powdered sugar (1/4 C at a time).
This icing is great for decorating the tops of cupcakes or laying in between cake layers but does not work well as a decorator icing for making flowers or other decor. The butter in this icing makes it too soft to keep the proper shape of flowers.
You can also make a lighter, whipped version of this icing by beating it on high with the wire whip attachment on your standing mixer.