1 (18.25 ounce) box devil's food cake mix
Vegetable cooking spray

Glaze
4 cups confectioners' sugar, sifted
5 to 7 tablespoons milk

Decorations
1 cup confectioners' sugar, sifted
1/4 cup unsweetened cocoa
2 tablespoons milk
Plastic spiders

Prepare cake as directed on package. Pour into two 8-inch square aluminum foil pans coated with cookingspray; bake at 350 degrees for 30-35 minutes or until tested done. Cool in pans on wire racks.

Combine 4 cups confectioners' sugar and 5-7 tablespoons milk in a large bowl; spread a thin layer evenly over each cake.

Combine 1 cup confectioners' sugar, cocoa and 2 tablespoons milk; spoon into a small zip-type bag. Close bag securely and snip a tiny hole in bottom corner of bag. Carefully pipe concentric circles onto each cake. Pipe straight lines at intervals from the inner circle through the outside circle, forming a web design. Garnish with plastic spiders.