Begin by crumbling the leftover cake in a large mixing bowl, ensuring there are no large chunks. Mix in vanilla frosting until the mixture reaches a dough-like consistency, about 2-3 minutes.

Take your silicone cakesicle molds and press the cake mixture firmly into each cavity, avoiding air pockets. Insert popsicle sticks into each mold’s center.

Place the molds in the freezer for approximately 30 minutes until solidified.

In a microwave-safe bowl, add white candy melts and heat at 50% power, stirring every 30 seconds until smooth, about 2-3 minutes. Add coconut oil if needed.

Carefully remove the cakesicles from molds and dip each in melted candy coating, allowing excess to drip off.

Mix powdered sugar with water and food coloring for drizzle. Transfer to a zip-top bag, snip a corner, and drizzle over cakesicles.

Place the decorated cakesicles on parchment paper and let them set at room temperature until hardened, about 15-20 minutes.