This peanut butter chocolate lava cake is a heavenly combination of rich chocolate and creamy peanut butter. The cake has a crispy exterior and a molten peanut butter center that is sure to satisfy your sweet tooth. The recipe is similar to the classic lava cake, but with the addition of peanut butter. The peanut butter is spooned into the center of the cake batter before baking, creating a delicious surprise when you cut into it. Serve it warm with a drizzle of extra peanut butter and a scoop of vanilla ice cream.