Place tortillas on work surface. Arrange cheese, turkey, grapes and cilantro over half of each tortilla. Sprinkle with cumin. Fold tortilla over filling.
Preheat oven to 200°. Heat large nonstick skillet over medium heat. Cook quesadillas one at a time until golden brown, about 3 minutes. Turn. Brush cooked top with lime juice and sprinkle with coarse salt. Cook until golden brown, about 3 minutes. Keep warm in oven. Repeat with remaining quesadillas. Serve.
A low-fat but tasty version of a typically calorie-laden favorite.