Mango and Brie Quesadilla with Sour Cream and Lime Dipping Sauce

Name: Mango and Brie Quesadilla with Sour Cream and Lime Dipping Sauce
Ingredients: 4 (8-inch flour) tortillas (available in all grocery stores but sometimes hidden in the refrigerated or frozen food sections); 1 ripe mango, peeled, and sliced (If unavailable, replace with papaya or pear); 1 serrano chile, or 2 jalapeno chiles, minced; 2 scallions, trimmed and diced; 1/2 cup lightly packed fresh cilantro leaves, chopped, stems discarded before measuring; 8 ounces Brie, sliced into long 1/4-inch slices (Rind removal is optional but I always remove it); Sour Cream and Lime Dipping Sauce, recipe follows; 1/4 cup sour cream or plain yogurt; 2 tablespoons freshly squeezed lime juice; 1/4 teaspoon salt