Step 1
Preheat the oven to 350°F. Line 24 cupcake cups with paper liners. Prepare the cake mix according to package directions. Divide evenly between the prepared pans. Bake until golden and a toothpick inserted in the center comes out clean; 22 to 25 minutes. Transfer to a wire rack and cool completely.
Step 2
Tint 1/4 cup of the frosting purple. (Kids can help mix the frosting and food coloring.) Spoon the purple frosting into a resealable bag and snip a small corner from bag.
Step 3
Frost the tops of the cupcakes with the remaining frosting. Pipe concentric circles of the purple frosting on top. (Parents will want to do this part.) Show kids how to use a toothpick to lightly pull the frosting from the center out to create the web.
Step 4
To make a fly, pipe a small dot of the black frosting and press almond slices on either side.