Peanut Butter Sheet Cake Recipe - Recipes by Clare

Ingredients

• 1 box yellow cake mix.
• 4 large eggs.
• ½ cup softened butter.
• 1 cup creamy peanut butter.
• 1 cup water.
• ½ cup creamy peanut butter (for frosting).
• ½ cup softened butter (for frosting).
• 4 cups powdered sugar.
• ¼ cup milk.
• 1 teaspoon vanilla extract.