Chocolate Peanut Butter Sheet Cake

Instructions

1. Preheat oven to 350 degrees. Combine butter, water, and cocoa powder in a large saucepan then bring to a boil. Remove from heat then set aside to cool slightly.
2. Whisk together flour, sugar, baking soda, and salt in a large bowl then create a well in the center. Add cocoa mixture then whisk until smooth. Add sour cream then whisk until smooth.
3. Pour cake batter into a non-stick sprayed baking sheet (I used a 17×12) or jelly roll pan, then spread evenly. Bake for 15-18 minutes, or until a toothpick inserted into the center comes out clean.
4. Whisk together powdered sugar, milk, melted butter, and vanilla in a large bowl. Add peanut butter then whisk to combine. Microwave for 30 seconds then stir if too thick. Pour over warm cake then spread evenly. Allow to cool then slice and serve.