Kue Peppermint Coklat Ganda yang Kenyal

Bahan-bahan (12 porsi)

• 1/2 cup unsalted butter ((softened // 1 stick equals 1/2 cup) )
• 3/4 cup sugar
• 1 large egg
• 1/4 tsp natural peppermint extract
• 1 1/4 cup unbleached all-purpose flour ((or whole-wheat pastry))
• 1/3 cup cocoa powder
• 1/4 tsp salt
• 1/2 tsp baking soda
• 1/4 tsp baking powder
• 1 can dy cane ((finely crushed))
• 1/3 cup dark, bittersweet or semisweet chocolate chips