Indoor: Prepare quesadillas as directed. In a skillet large enough to fit tortillas, heat 1 to 2 tablespoons of vegetable oil over medium heat. When oil is hot, carefully fry both sides of quesadillas for 2 to 3 minutes or until golden brown; turning with a large spatula. Garnish as directed.
Set up grill for direct cooking over medium heat. Oil grate when ready to start cooking.
Lay out 4 tortillas; spread each with half of the herb cheese. Divide and top each tortilla with salmon, capers, and jack cheese. Top with remaining tortillas.
In a small bowl, combine sour cream with dill; set aside. Grill tortillas on hot oiled grill 3 to 4 minutes per side or until cheese has melted. Serve hot topped with sliced avocado, cherry tomatoes, and onion rings. Garnish with creme fraiche.