Heat oven to 350℉/177℉.
Line 2 sheet pans with parchment paper. Set aside.
Combine chocolate and butter in a microwave safe bowl.
Heat in 15 second increments, stirring well after each, until melted and smooth. Set aside.
In a small bowl, whisk together flour, cocoa, baking powder, and salt. Set aside.
Whisk eggs, sugars, and vanilla until foamy and light, about 2-3 minutes.
Stir in melted chocolate.
Fold in flour mixture.
Use a 1½ Tablespoon cookie scoop to portion onto prepared pans.
Bake for 10-12 minutes.