*Cake
Preheat oven to 400 degrees
Lightly grease a 10x15x1 baking sheet
In your mixer bowl, combine sugar, baking soda, flour & salt - set aside
In a small saucepan, combine butter, water & peanut butter
Heave over medium & bring to a boil
Pour over your dry ingredients & beat to combine & cool slightly as you are beating
Add in milk, eggs & vanilla & continue beating until combined
Pour onto your prepared baking sheet & bake for approx 20 min or until toothpick test is clean
While it's baking prepare your frosting
*For the frosting
Combine all ingredients in mixer bowl & beat well until smooth & all the brown sugar as dissolved
Once cake is finished baking & cooling - spread frosting over the top with a spatula
Keep refrigerated