In A Small Skillet Over Medium Heat, Cook The Onions, Vinegar, Sugar, Thyme And Rosemary In Oil For 10 Minutes Or Until Onions Are Golden Brown. Spoon The Mixture Over Half Of Each Tortilla; Top With Apples And Cheese. Fold Over. Cook On A Griddle Over Medium Heat For 2-3 Minutes On Each Side Or Until Cheese Is Melted.