Preheat your oven to 350°F (180°C) and line your baking sheets with parchment paper.
In a mixing bowl, combine peanut butter, granulated sugar, brown sugar, egg, and vanilla extract. Mix until smooth and creamy, using an electric mixer or a wooden spoon.
Gradually add oats, baking soda, and a pinch of salt. Continue mixing until the dough comes together.
Gently fold in the dark and semi-sweet chocolate chips until the mixture is evenly combined.
Scoop out portions of dough onto the prepared baking sheets, leaving some space between each cookie.
Bake for 10-12 minutes, or until the cookies turn lightly golden. After baking, allow them to cool on a rack for a few minutes before enjoying. The combination of peanut butter, oatmeal, and chocolate is simply irresistible.