Slow-Cooked French Onion Soup | Reader's Digest Canada

Ingredients

• 2 tbsp butter (cubed)
• 2 large sweet onions (halved and thinly sliced)
• 1 large red onion (halved and thinly sliced)
• 1/2 tsp coarsely ground pepper
• 2 cans condensed beef broth ((10-1/2 ounces each), undiluted)
• 3 cups water
• 3/4 cup white wine or regular-strength beef broth
• 2 fresh thyme sprigs
• 1 fresh parsley sprig (optional)
• 1 bay leaf
• 2 tsp Worcestershire sauce
• 16 slices French bread ((1/4-in. thick))
• 3/4 cup Gruyere or Swiss cheese (shredded)