01 -
Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
02 -
In a large mixing bowl, cream the softened butter and peanut butter together until smooth and combined.
03 -
Incorporate granulated sugar and light brown sugar, beating the mixture until it becomes light and fluffy.
04 -
Add the egg to the bowl and blend until fully integrated.
05 -
Pour in the vanilla extract and mix until evenly distributed.
06 -
In a separate bowl, sift together the all-purpose flour, baking soda, and kosher salt.
07 -
Gradually add the dry ingredient mixture and quick-cooking oats to the wet ingredients, mixing until just combined.
08 -
Using a spatula, gently fold semi-sweet chocolate chips and red and green candy-coated chocolates into the dough.
09 -
Scoop dough onto prepared baking sheet, spacing evenly, and top each cookie with Christmas-themed sprinkles.
10 -
Bake in the preheated oven for 30 to 45 minutes, or until the edges are golden and centers are set.
11 -
Allow cookies to cool on the baking sheet for several minutes before transferring them to a wire rack to cool completely. Serve once cooled.