Peanut Butter Marble Cake

We made this cake to bring to my parents' house yesterday. I thought the frosting was especially tasty. Cake: 2-1/4 cups flour 1-1/2 cups sugar 1/2 cup peanut butter (I used crunchy) 1-1/4 cups milk 3-1/2 teaspoons baking powder 1 teaspoon salt 1 teaspoon vanilla 3 eggs 3 tablespoons baking cocoa 1/8 teaspoon baking soda Peanut Butter Buttercream Frosting: 6 cups powdered sugar 2/3 cups butter, softened 3 teaspoons vanilla 1/2 cup milk 1/2 cup peanut butter

1. Heat oven to 350. Grease bottom and sides of two 9-inch round cake pans; lightly flour.


2. In a large bowl, beat flour, sugar, 1/2 cup peanut butter, 1-1/4 cups milk, baking powder, salt, vanilla and eggs with electric mixer on low speed 30 seconds; scrape sides. Beat on high speed three minutes, scraping bowl occasionally.


3. Pour two-thirds of batter (about 3 cups) into pans. Stir cocoa and baking soda into remaining batter. Drop chocolate batter by generous tablespoonfuls randomly into pans. Pull knife through batters to make marbled design (this was E and F's favorite part).


4. Bake 30-35 minutes or until toothpick inserted near center comes out clean.


5. Cool rounds 10 minutes; remove from pans to cooling rack. Cool completely (about 1 hour).


6. In a medium bowl, mix powdered sugar and butter. Stir in vanilla, milk and peanut butter. Beat until smooth and spreadable. Spread frosting over first layer of cake. Place next round on top and frost the whole cake. I had some frosting left over. I just put in the fridge.


7. I ground up some chocolate and sprinkled it over the top.