These terrifying Halloween trifles are going to be the talk of your Halloween party! Made in nifty jars, each layer is a gruesome twist on a classic trifle. From green custard to orange jelly, these trifles are sure to please your kids! You can cheat and use ready-made foods or make your own - it is entirely up to you! Throwing a Halloween party this year? Check out the rest of our Halloween party food ideas here!