Triple Threat Lemon Cupcakes

I've decided to call these 'Triple Threat' lemon cupcakes because as far as I'm concerned, they possess the three elements required to create a perfect cupcake. Beautiful spongey cake with flecks of fresh lemon zest dotted inside, filled with a tart lemon curd surprise, and topped with a sweet lemony cream cheese frosting...these cupcakes are a real game changer.