This homemade watermelon frosting is soft, sweet, tangy, and creamy! Fluffy yet dense, the light buttercream is perfect to pipe onto cupcakes or to decorate a cake.
Cream the butter in a large mixing bowl or stand mixer. Continue to beat until light and fluffy. Add 1 teaspoon clear vanilla, ½ of a packet of watermelon gelatin and ¼ cup sanding sugar. Beat until well incorporated.
Slowly mix the powdered sugar into the frosting, 1 cup at a time, while adding a splash of milk in between each cup. Mix for at least one minute between cups or until the frosting is creamy.
When the frosting has reached your desired consistency, add the pink food coloring. Add a few drops of red if you want a deeper pink color.