In a medium bowl, combine the butter, honey, sugar, tomato paste, tamarind, spices, and salt. Whisk together until the sugar is dissolved. Add the nuts. Toss to coat the nuts completely in the sugar-spice mixture.
Select Bake, and set the time to 30 minutes and the temperature to 280°F. Press Start/Stop.
Once the unit is preheated, add the nuts to the basket. Shake the basket every 10 minutes while cooking to toss the nuts. At the end of cooking time, the nuts should be toasted and caramelized.
Remove the basket and sprinkle with the lime zest and additional salt, if desired. Let cool completely before serving.
