Preheat the oven to 375°F (190°C) and line baking sheets with parchment paper.

In a large bowl, cream together the butter, peanut butter, granulated sugar, and brown sugar until light and fluffy.

Beat in the eggs one at a time, then stir in the vanilla extract.

In a separate bowl, whisk together the flour, baking soda, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Take about 1 tablespoon of dough and flatten it in your hand. Place a Snickers bar in the center and wrap the dough around it, sealing it completely. Roll into a ball.

Place the dough balls on the prepared baking sheets, spacing them about 2 inches apart.

Bake for 10-12 minutes, or until the edges are lightly golden.

Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.