Preheat oven to 300 degrees and grill to medium-high. In large bowl, thoroughly mix all burger ingredients together, reserving 3 tsp. of tomato powder. Form into four ¼ lb. patties or six slider-size patties. Place patties on grill and sprinkle each evenly with remaining tomato powder. Cook about 3 to 4 min. per side or to desired doneness, turning over once. Remove from grill and let rest for 5 min. Meanwhile, spread Caribbean Butter on inside of each bun and toast in preheated oven until golden brown, about 10 min.
To build burger, lay piece of lettuce on bottom bun, add burger and top with desired amount of Caribbean Spiced Slaw. Cover with top bun and enjoy!