Prepare lemon cake according to box directions adding in 1 tablespoon lemon zest to cake batter. Bake and cool completely.
In a mixer bowl, combine Jello, boiling water and powdered sugar. Stir until completely dissolved.
Refrigerate the mixture for 1 hour or until syrupy.
Once syrupy, mix in cream. Beat until cream slightly mounds.
Mix in 8 ounces of Cool Whip and then stir in 1 tablespoon of lemon zest.
Cut the cake in small cubes before assembling the trifle.
Start with adding a layer of cake cubes at the bottom of serving glasses or trifle dish. Next add a layer of lemon cream. Continue layering cake and cream then top with with remaining Cool Whip.
Top my lemon trifle with a twist of lemon peel.
Refrigerate until ready to serve.
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Notes
The calories shown are based on the recipe being divided 20 ways, with 1 serving being 1/15 of the recipe. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**