Baked Chocolate Donuts with Peppermint

Name: Baked Chocolate Donuts with Peppermint
Prep time: 15 min
Cook time: 12 min
Total time: 27 min
Cuisine: American
Ingredients: 3/4 cup all-purpose flour; 1/4 cup unsweetened cocoa powder; 1 teaspoon baking powder; 1/2 teaspoon fine sea salt; 1/4 cup granulated sugar; 1 egg (beaten); 1/4 cup milk; 1/4 cup strong brewed coffee (cooled); 2 tablespoons vegetable oil; 3/4 cup powdered sugar; 2 tablespoons unsweetened cocoa powder; 2 tablespoons milk; 1 teaspoon peppermint extract; 1/4 cup crushed peppermint candy cane pieces