Pro Tip: To give your Leprechaun Lime Poke Cake a truly fun St. Patty’s Day flare, decorate the top with a cute shamrock design. To do this, after you have covered your cake with whipped topping (but before the sprinkles), place cake in freezer for 10 minutes to cool. Next, cut a shamrock design into a piece of copy paper. ‘Lightly’ place paper over now cooled cake (do not press down, it’ll make it harder to remove) and sprinkle sugar over top. Remove the paper by tipping toward the center (that way any extra sugar lands on your design, and not the cake).