Lemon Buttercream Frosting

One of Troy's favorite desserts is lemon cake with lemon frosting. I wanted to forgo the store-bought can of frosting (with mystery ingredients that I don't know how to pronounce) and make my own. I came across a recipe for lemon buttercream frosting, and it pairs perfectly with lemon cake. The best part? It only has four ingredients, all of which I can pronounce.

1/2 cup butter (softened)

4 cups powdered sugar

1 lemon (to make 3 Tablespoons juice and about 1/4 teaspoon zest)

1 Tablespoon milk

Cream butter. Add 2 cups powdered sugar, mix well. Add 2 Tablespoons lemon juice, mix well. Add remaining 2 cups powdered sugar, mix well. Add remaining 1 Tablespoon lemon juice and 1 Tablespoon milk, mix well. Frosting will be stiff; you can add more lemon juice or milk for thinner consistency. Frosts one 9x13-inch cake.