Gather all your ingredients and prepare your workspace with your large glass trifle dish nearby.
In a mixing bowl, whip the chilled heavy cream with a whisk until soft peaks form, about 3-4 minutes. You should see gentle ripples and the cream will hold a slight curl when lifted.
Add the sugar and vanilla extract to the whipped cream and gently fold until combined, keeping the mixture light and airy.
Start layering in your trifle dish: spoon a generous layer of cookie or cake crumbs at the bottom, spreading evenly with your spatula.
Spread a thick layer of whipped cream over the crumbs, smoothing the surface gently with your spatula.
Scatter some chopped candies, fruits, or bright toppings over the whipped cream for color and crunch.
Repeat the layering process: add another layer of crumbs, followed by whipped cream and toppings, until the dish is filled, finishing with a top layer of whipped cream.
Decorate the top with candy eyes, gummy worms, and sprinkle chocolate shavings or sprinkles for a spooky, textured look.
Drizzle colored syrup or edible glitter over the top to add shimmer and a creepy glow, being careful not to overdo it.
Cover the trifle and chill it in the refrigerator for at least 2 hours, allowing flavors to meld and textures to set.
Just before serving, add any final spooky decorations or extra toppings to enhance the fun and visual appeal.
Serve your spooky Halloween trifle in clear glasses or bowls, and enjoy the playful mess and delightful flavors!