Preheat the oven to 350 degrees F. Line a 11x17 sheet pan completely with parchment paper.
In a large mixing bowl, stir to combine the sweetened condensed milk, corn syrup, amaretto liqueur or vanilla, and salt. Dump in the coconut, almonds, and lime zest and stir to distribute.
Spread the mixture evenly onto the parchment paper lined baking sheet. Bake for about 25 minutes, but keep an eye on the coconut bark. It's done when it looks golden brown all over, and especially golden brown on the edges.