Peanut Butter Cake - cooking recipe

Ingredients

3/4 c. butter
1/4 c. creamy peanut butter
4 eggs
1/2 c. buttermilk
2 c. sugar
3 tsp. baking powder
3 c. flour
1 tsp. vanilla
1/2 c. water
Peanut Butter Frosting (recipe follows)

Preparation

Let butter, peanut butter, eggs and buttermilk warm to room temperature for easy mixing (butter should be very soft).