Preheat oven to 375°F and line baking sheet with silpat mat or parchment paper.
In a large mixing bowl, cream butter and sugar until light and fluffy. Add the egg, vanilla, and peanut butter. Beat until smooth. Mix in the flour, baking powder, and salt. Stir in the chocolate chips.
Take a large chunk of dough and place a mini Snickers in the middle. Smooth the dough over the Snickers bar until it is entirely covered and the dough is a round mound. Drop the round mound of dough onto a baking sheet lined with parchment paper or silpat mat. Repeat with rest of the dough, spacing them about 1 inch apart on the baking sheet.
Bake for about 12 minutes until cookies turn a light brown color and the bottoms will slide off parchment paper.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.