11. Heat oven to 350º.
22. Melt butter in 10-inch skillet over medium heat. Cook onion in butter 10 minutes, stirring frequently. Stir in cranberries, brown sugar and vinegar. Cook about 5 minutes, stirring frequently, until mixture is thickened and caramelized.
33. Lightly brush ovenproof plate with oil. Place cheese on center of plate. Bake uncovered 8 to 10 minutes or until cheese is soft and partially melted.
44. Spoon onion topping over cheese. Sprinkle with nuts. Serve with crackers.