Preheat oven to 350°F. Line a baking sheet with parchment paper.

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

Beat in the egg and vanilla until smooth.

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

Gradually stir in the dry ingredients to the wet mixture, stirring until just combined.

Fold in the oats, granola, and chocolate chips until evenly distributed. 

Scoop rounded tablespoons of dough and drop them on the prepared baking sheet, spacing them about 2 inches apart.

Bake for 9–11 minutes, or until the edges are golden and the centers are set.

Let cookies cool on the pan for 5 minutes, then transfer to a wire rack to cool completely.