01 -
Preheat oven to 350 degrees Fahrenheit.
02 -
In a large bowl, whisk together melted butter, sugar, salt, and egg. Stir in vanilla, grated zucchini, and sour cream until fully incorporated.
03 -
Sift flour and cocoa powder into the wet mixture. Stir gently until just combined. Fold in mini chocolate chips.
04 -
Coat a 24-slot mini muffin pan with nonstick cooking spray. Fill each slot with 2 heaping tablespoons of batter.
05 -
Bake for 13 to 15 minutes or until a toothpick inserted in the center comes out clean.
06 -
Remove from oven and let cool slightly on a wire rack before serving.