Caramelized Onions

• 3 pounds Vidalia or other sweet onions (4 to 5 onions, 3 to 4 inches in diameter), peeled and cut into 1/8-inch-thick to 1/4-inch-thick slices
• 8 tablespoons (1 stick) butter (see Note)

1. Place the onions and butter in the insert of the slow cooker, cover, and cook on LOW for 12 to 14 hours, until the onions are deep brown and very soft.
2. It's almost impossible to overcook these; make sure to let the onions cook until they are mahogany colored.

vidalia, butter

Taken from www.epicurious.com/recipes/food/views/caramelized-onions-100845 (may not work)