Coconut Sorbet with Cashew Crunch

Lightly oil a rimmed baking sheet; set aside. Bring sugar and 1/4 cup water to a boil in a small saucepan over high heat, stirring constantly until sugar has dissolved. Cook, without stirring, until mixture turns medium amber, washing down sides of pan with a wet pastry brush as needed to prevent crystals from forming, about 9 minutes. Remove from heat; using a fork, stir in coconut and cashews.

Using two forks, transfer small clusters (about 1 3/4 inches) of cashew mixture to prepared baking sheet; let cool completely, about 10 minutes. Coarsely chop some of the clusters; leave others whole.

Scoop sorbet into dishes; top with lychees and cashew crunch.