Ingredients
Instructions
Place butter, thyme, and bay leaf in the bottom of a 6-quart electric slow cooker. Add onions; sprinkle with sugar. Cover and cook on HIGH for 8 hours.
Remove thyme and bay leaf; discard. Add stock, vinegar, salt, and pepper; cook, covered, on HIGH for 30 minutes.
Preheat broiler to high.
Arrange bread in a single layer on a baking sheet; drizzle with olive oil and heap mounds of the shredded cheese on the bread. Bake at 350 until melted and then broil for 30 seconds to get a few browned areas on the cheese. Scoop into bowls. Top each serving with 2 cheesy bread croutons and enjoy!