My friends decided to have a Mexican-themed potluck and assigned dessert to me. I love lime, but was sick of boring old key lime pie, so I decided to try something a little new....and it was a hit (and easy, too!)!
In a large dry skillet, toast coconut over medium heat until browned and toasted. Cool completely.
In a large bowl, whisk together sweetened condensed milk and key lime juice. Set aside.
In a separate large bowl, whip heavy whipping cream with a hand mixer until it begins to thicken. Add confectioner's sugar and continue to whip until stiff peaks form.
Cut cake into small chunks.
Using a trifle dish (or any clear bowl), begin to layer the trifle. Start with a layer of cake (use 1/3 of the cake). Drizzle the cake with tequila, then pour 1/3 of the key lime mixture over it. Spread 1/3 of the whipped cream, and then sprinkle with toasted coconut.
Repeat two more times.
Chill in the refrigerator for two hours or until ready to serve.