1. Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.

2. In a bowl, whisk eggs, melted butter, and vanilla until smooth.

3. Fold in flour, cocoa powder, baking powder, sugar, and salt until a thick dough forms.

4. Stir in chocolate chips.

5. Scoop dough into 1.5-inch mounds on the sheet, spacing 2 inches apart.

6. Bake 10–12 minutes until edges are set and centers are slightly soft.

7. Cool on the sheet for 5 minutes, then transfer to a rack to cool completely.

8. Use frosting to pipe designs and adhere candy and sprinkles as desired.

9. Serve immediately or store in an airtight container with parchment layers between cookies.