Mo's Blueberry Lemon Cupcakes with Luscious Lemon Frosting

My friend Mo made this recipe into a divine cake a few weeks ago and I it was amazing. Well, if amazing doesn't do it justice. The cake was very moist and fruity but it still was rich and satisfying!  The buttercream was the best lemon cream cheese buttercream I have EVER tasted. Mo allowed me to take a little from the bowl as she was frosting the cakes, I couldn't get enough of this rich and sinfully creamy frosting. It was a perfect balance of rich and sweet. The lemon zest made the buttercream light and fruity but it the perfect lemon cream cheese buttercream.  I can not gush about this buttercream enough! When the cake was served it was just perfect and my (rather large) slice disappeared too quickly.