These cupcakes were made in honor of my bunnies' birthdays. Yes, their birthdays are celebrated every year; yes, it's partly an excuse to make cake; and yes, I am a crazy bunny lady, but I'm okay with that! Below is our one eared boy getting a little taste of his birthday cupcake. He definitely approved, though I'm sure he wishes I'd given him more than just a tiny piece!
Luscious Lemon Buttercream Frosting
1/2 C salted butter, softened
2 T lemon juice (or 1 T lemon juice and 1 T water if you want it more mild)
about 5 drops of vanilla extract
3 C powdered sugar
optional: a drop or two of yellow food coloring
In the bowl of a stand mixer, beat butter with the whisk attachment until smooth. Add lemon juice and vanilla, then add the powdered sugar. Whisk on low until the sugar is incorporated, then bring it up to medium high and beat it for a couple of minutes until fluffy. The longer you go, the fluffier it will get. If it's too thick, add water a teaspoon at a time and if it's too thin, add powdered sugar 1/4 C at a time. If you're using food coloring, beat it in at the end. You can of course also use a hand held mixer. Use the frosting right away or else cover it because the surface will dry.
Yield: Enough frosting for about 18 cupcakes if you use lots like in the picture, or 24 if you spread on a thinner layer. I have not tried it yet, but I think it would be enough to frost a 9 by 13 cake. If you want to fill and frost a layer cake, you should make one and a half batches so you have enough.