Bring to rapid boil:

1/2 c. peanut butter
1 c. water
2 sticks butter

Pour over:

2 c. flour
2c. sugar
1 tsp. salt
1 tsp. baking soda

Mix and add:

2 eggs
1/2 c. buttermilk

Pour batter in a greased and floured sheet cake pan. Bake at 350 degrees for 20-25 minutes.