Go-to Birthday Sheet Cake with Chocolate Frosting

As much as we love the drama a layer cake brings to any party, sometimes we don’t have the time to make one. Instead, we bake a buttery vanilla cake in a standard baking dish and top it with a simple but oh-so-chocolaty frosting. Easy for transport and even easier to share, it delivers a nostalgic birthday-cake-from-the-grocery-store vibe (in the best way possible). If you like, add sprinkles to the batter and to the top of the cake, decorate with fresh fruit or edible flowers for a more so