1. Mix cheese, green onions and seasonings in medium bowl. Set aside.
2. Lightly brush one side of 4 flour tortillas with oil. Place oiled-side down on baking sheet. Top tortillas with 1/2 of the cheese mixture, then with shrimp and mango. Sprinkle remaining cheese evenly over shrimp and mango. Top with remaining tortillas. Brush top with oil.
3. Grill over medium heat about 4 minutes per side until cheese is melted and tortilla is browned. Cut into wedges to serve.
Test Kitchen Tip: Quesadillas may also be cooked in a grill pan on the stove top or in a panini maker. Or, place quesadillas on baking sheets. Bake in preheated 350° F oven for 5 to 10 minutes or until cheese is melted.