This Chocolate Sheet Cake is rich and chocolatey and so easy to make! Topped with a simple frosting made of melted butter, cocoa and sugar. It's sure to be a hit at any potluck!
Preheat oven to 400 degrees F and grease a 11x17″ sheet pan with non stick spray.
In a large bowl, stir together butter and sugar with a whisk. Add eggs one at a time and whisk until smooth.
Add milk, cocoa, baking soda and vanilla and whisk until combined.
Stir in flour. Add coffee and stir slowly until combined.
Spread into prepared baking sheet and and bake for 16-18 minutes. Remove from the oven and cool to room temperature.
Frosting:
In a medium bowl, combine butter, cocoa, milk, sugar and vanilla and whisk until combined. Spread over cooled cake and let set before slicing. You can also toss them in the refrigerator to speed up the process!