Kue Coklat Rocky Road

Bahan-bahan (24 porsi)

• 8 ounces semi-sweet baking chocolate bars, chopped
• 1 cup flour
• ⅓ cup cocoa powder
• 1 teaspoon baking powder
• ¼ teaspoon salt
• 5 tablespoons unsalted butter (room temperature)
• ½ cup brown sugar
• ½ cup granulated sugar
• 2 large eggs (room temperature)
• 1 teaspoon vanilla extract
• ¾ cup walnut pieces
• 1 cup mini marshmallows, (divided)
• 1 cup chopped milk chocolate bars, (divided)