Spray a medium sized casserole dish with cooking spray and set aside.
Boil water and take off heat. Add packet of Jell-O and whisk until it is dissolved. Add the Welch's Sparkling White Grape Juice Cocktail, make sure this is chilled it is important! Stir once to combine.
Pour Jell-O mixture into dish. Cover with plastic wrap and let sit in fridge overnight.
When ready to cut into squares, take a butter knife and run it along the edges of the dish. Turn this out onto a cutting board or platter.
Cut into desired shapes, you can even use cookie cutters!
Lay them on a platter and top with sprinkles, serve and enjoy!