Chocolate Sheet Cake with Coconut Buttercream

For the cake, place the All-Purpose Flour (1 3/4 cups) , Baking Soda (2 tsp) , Unsweetened Cocoa Powder (1 cup) , Granulated Sugar (2 cups) , and Salt (as needed) in the bowl of a standing mixer and whisk until combined.

Over the stovetop, heat the Water (1 cup) , Butter (1/2 cup) , and Instant Coffee (2 tsp) together until just melted.

Add Eggs (2) and Buttermilk (1 cup) into the dry ingredients and turn the mixer on low while pouring in the melted butter/coffee mixture. Scrape down the sides, and continue to stir for another 30 seconds.

For the frosting, whip the Butter (1 cup) and Water (1 Tbsp) together for 2 minutes until pale. Add in the Powdered Confectioners Sugar (4 cups) , Coconut Extract (1 tsp) , and Heavy Cream (1 Tbsp) and whisk on low.