Preheat broiler, but do not preheat broiler rack (preheating can cause broilerrack to warp).
Place pork chops on the unheated rack of a broilerpan. Arrange onions around pork chops. Broil 4 inches from the heat for 9 minutes.
Meanwhile, in a medium saucepan bring wine or apple juice to boiling; boil uncovered on high for 4 to 5 minutes or until reduced by about half. Meanwhile, combine cornstarch with the 1/2 teaspoon water; stir into wine or apple juice. Cook and stir until slightly thickened and bubbly. Cook and stir for 2 minutes more. Remove from heat. Stir in oil, garlic, 2 tablespoons of the thyme or basil, pepper, and salt. Measure out 1 tablespoon of glaze. Set aside.
Turn pork; broil 9 to 13 minutes more or until juices run clear, brushing pork and onions with glaze during the last 5 minutes of cooking.
Remove onions to a small serving bowl. Remove pork chops to serving platter. Stir the reserved glaze and thyme or basil into onions. Pass with pork chops. Makes 6 servings.