Ingredients:
- 2 cups all-purpose flour
- 2 cups granulated sugar
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 cup water
- 1 cup (2 sticks) + 1/2 cup (1 stick) butter or margarine, softened
- 1/2 cup + 1/2 cup peanut butter
- 2 eggs
- 1/2 cup buttermilk (or 1/2 Tablespoon white vinegar + enough milk to make 1/2 cup set aside for 5 min)
- 1 teaspoon + 1 teaspoon vanilla extract
- 6 Tablespoons milk
- 4 cups powdered sugar
Directions:
- Preheat oven to 350 degrees. Grease 10"x15" cookie sheet with cooking spray.
- In a large bowl, whisk together flour, granulated sugar, baking soda and salt and set aside.
- Combine water and 1 cup butter in saucepan and bring to a boil. Remove from heat and stir in 1/2 cup peanut butter until well blended. Pour onto flour mixture and blend well.
- In a separate bowl, beat together the eggs, buttermilk and 1 teaspoon vanilla. Pour into flour mixture and bland well.
- Pour the batter onto cookie sheet, spread evenly and bake for 20 minutes. Test with toothpick; when inserted near center comes out clean.
- Bring 1/2 cup butter, 1/2 cup peanut butter and milk to a boil in a large saucepan. Remove from heat and add 1 teaspoon vanilla. Beat in powdered sugar with electric mixer. Frost cake while icing is hot and cake is warm.
