Preheat the oven to 350 degrees Fahrenheit and line a baking sheet with parchment paper.
In a large mixing bowl, whisk together the peanut butter, maple syrup, egg, and vanilla extract until the texture is homogeneous.
Add the rolled oats and baking soda to the wet mixture and stir until fully combined.
Fold in the dark chocolate chips and the candy-coated chocolates using a spatula.
Using a standard cookie scoop, portion the dough into 12 balls and place them on the baking sheet, pressing down slightly to flatten each one.
Bake for 10 minutes or until the edges are firm and slightly golden.
Remove from the oven and allow the cookies to cool on the baking sheet for 10 minutes to set before moving to a wire rack.