Pretty much any chocolate and peanut butter concoction means heaven to me and my sweetheart, so a double chocolate cupcake stuffed with a peanut butter center is a must make. These decadent cupcakes are light and moist with a perfect, creamy peanut butter center. The sweet can actually be served with no frosting — they're already that delicious — but to take it to the next level, invest a little more time to top these cupcakes with a traditional chocolate frosting or chocolate ganache, then pipe each one of them with a precious peanut butter heart.