Giant Peanut Butter and Jelly Sandwich Cake from Cookies Cupcakes and Cardio

Read the blog post here:  ...  Learn how to make a homemade peanut butter and jelly sandwich cake. Peanut Butter Cake: • 1 3/4 cups all purpose flour • 1/4 teaspoon baking soda • 3/4 teaspoon baking powder • 1/2 teas