Good-Cooking - Sweet Onion Grilled Quesadillas

Ingredients

• 1 medium-large Vidalia sweet onion
• Olive oil for brushing onion and tortillas
• 4 (6- to 7-inch) flour tortillas
• 3/4 cup grated Monterey jack cheese (about 3 ounces)
• 1/4 cup packed fresh coriander sprigs, washed, dried and chopped coarse