Chocolate Crinkle Cookie Recipe for Kids | America's Test Kitchen Kids

Name: Chocolate Crinkle Cookie Recipe for Kids | America's Test Kitchen Kids
Cuisine: American
Ingredients: ½ cup (2½ ounces) all- purpose flour; ¼ cup (¾ ounce) Dutch-processed cocoa powder; 1/2 tsp. baking powder; ⅛ teaspoonbaking soda; ¼ teaspoon salt; ¾ cup packed (5¼ ounces) brown sugar; large egg plus 1 large egg yolk; 1/2 tsp. vanilla extract; 2 ounces unsweetened chocolate; 2 tbsp unsalted butter; ¼ cup (1¾ ounces) sugar; ¼ cup (1 ounce) confectioners sugar; Rimmed baking sheet; Parchment paper; 3 bowls (1 large, 1 medium, 1 small microwave-safe); Large zipper-lock plastic bag; Rolling pin; Oven mitts; 2 shallow dishes; 1-tablespoon measuring spoon; Cooling rack