For these Halloween treats, make a big pan or chocolate brownies and then cut them into spooky cat shapes.
Line a 15x10x1-inch baking pan with foil. Grease the foil; set pan aside.
In a small mixing bowl, stir together the flour, the 3/4 cup cocoa powder, cinnamon and salt.
In a large mixing bowl, combine granulated sugar and melted butter. Stir in eggs and vanilla. Add the flour mixture to butter mixture and stir until combined.
Spread evenly into the prepared pan. Bake in a 350 degree F oven for 25 minutes or until a toothpick inserted near center comes out clean. Cool in pan on wire rack. Cover and chill 3 to 24 hours.
Uncover the brownie layer. Lift from pan using foil. Cut into cat shapes using a 3-inch cookie cutter or a knife. In a small bowl stir together the powdered sugar and 2 teaspoons cocoa powder. Sprinkle over cat cutouts. Press 2 chocolate pieces into each cutout for the eyes. Makes 14, 3-inch cookies.