Peanut Butter Sheet Cake Brownies

I’ve been making a sheet cake recipe similar to yours for my whole married life. It’s one of the few recipes I got from my mother-in-law. The hardest part about making it is that you can’t stop at just one piece. My husband is a peanut butter so I’ll have to give this new version a try!
1/4 Cup creamy peanut butter
1 Cup Water
1/2 Cup butter
1 Cup Sugar
1 Cup Brown sugar
2 Cups Flour
1 tsp salt
1 tsp baking soda
2 eggs
1/2 Cup buttermilk
1 tsp vanilla
3/4 Cup butter
6 TBLSP buttermilk
1/2 Cup peanut butter
3 1/2 Cup powdered sugar
1 TBLSP vanilla

For more details please visit this link were you will find instructions:

Source :