French Onion Soup | Cruise Scoop

Ingredients

• ¼ C (57 g) unsalted butter
• 6 med yellow onions, sliced
• 1 tsp (4 g) sugar
• 1 Tbsp (8 g) flour
• 1 C (237 ml) dry white wine
• 4 C (946 ml) beef broth
• Pepper to taste
• 6 ½-inch (1.3-cm) thick slices day-old French bread
• 2 C (241 g) grated Swiss cheese
• ½ C (90 g) grated Parmesan cheese