Step 1: Preheat your oven to 350°F (175°C) to ensure even baking.
Step 2: In a medium bowl, whisk together flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
Step 3: In a large mixing bowl, cream together butter, granulated sugar, and light-brown sugar until light and fluffy, about 2-3 minutes.
Step 4: Beat in eggs one at a time, followed by vanilla extract, mixing until well combined.
Step 5: Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined.
Step 6: Gently fold in chocolate chips with a spatula.
Step 7: Spoon small dollops of Nutella onto a plate and freeze for about 15 minutes.
Step 8: Portion out cookie dough on a lined baking sheet, flatten slightly, place a frozen dollop of Nutella in the center, and cover with more dough.
Step 9: Bake for 10-12 minutes until edges are set but centers are soft.
Step 10: Let cookies cool on the baking sheet for 5 minutes before transferring to a cooling rack.
