Crush the graham crackers until they form fine crumbs. Mix with melted butter until the texture is crumbly and press it firmly into the bottom of your trifle dish. This will give a solid and crunchy base for the layers.
Blend cream cheese, powdered sugar, and key lime juice until smooth. Gently fold in whipped cream to keep the mixture light and airy, creating that melt-in-your-mouth consistency.
Start with a graham cracker layer, then add a spoonful of key lime filling. Repeat until all ingredients are used, finishing with a layer of creamy filling on top. The layers should look distinct and visually appealing.
Cover with plastic wrap and refrigerate for 2–3 hours. Chilling allows the flavors to meld while keeping the crust slightly crunchy.
Sprinkle lime zest on top before serving. Optionally, garnish with berries or whipped cream for extra flair. Keep the trifle chilled until ready to serve for the best taste.