Preheat your oven to 350°F (175°C).
In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until fluffy.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt.
Gradually add the dry mixture to the wet ingredients, mixing until just combined.
Fold in the semi-sweet chocolate chips until evenly distributed.
Scoop tablespoon-sized portions of dough onto a lined baking sheet, leaving space between each cookie.
Sprinkle colorful sprinkles on top of each cookie before baking.
Bake for 10-12 minutes or until the edges are set but the centers are slightly soft.
Allow the cookies to cool on the baking sheet for a few minutes before transferring to a wire rack.
