Costco Cake Christmas Tree Make-Over!🎂🎄 My easy effortless store-bought cake glow-up from years back: $14.99 , 20 minutes, and such a showstopper!🎅 Directions: Scrape off the frosting from top and sides of the cake into a bowl and tint 1 tbsp of it with brown and the rest with green food coloring. Fill a piping bag with 1 M Wilton piping tip and the green frosting, and another tipples piping bag with brown frosting (cut 1/8 " opening); set aside. Slice the cake with sharp (bread knife, if pos