Prepare cake mix as directed on box. For the easiest filling, transfer the cake batter to a piping bag or plastic storage bag with the corner snipped. Fill each sugar cone 2/3 full. Bake on the second to lowest rack for 13-15 minutes or until tops spring back when gently pressed. Remove and allow to cool completely.
When the cones are fully cooled, trim the tops with a serrated knife to create a flat surface.
Frost the cake tops with vanilla buttercream frosting, cap with a Fudge Stripe Cookie. Allow the frosting to set.
Flip them over to decorate. For best results, do a "crumb layer" of frosting as the base and allow it to set, then use assorted tips and frosting to make Christmas trees. They were made using a star tip and green frosting.
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Notes
**Note: If you don't have a cake cone baker/decorator, cover a bundt pan with heavy duty aluminum foil, wrapping tightly. Use two layers if you are concerned about the sturdiness. Using a sharp knife poke 12 small holes around the circle. Insert sugar cones so they are secured upright for filling and baking. If you are making 24 you will only do half at a time.