Lightened Up French Onion Soup: Low-Fat Comfort, Full Flavor.

Ingredients

• 5 lbs (2.5 kg) Yellow Onions, peeled, thinly and uniformly sliced
• 1 Tbsp (15 g) Unsalted Butter
• 1 Tbsp (15 ml) Extra Virgin Olive Oil
• 1 tsp (5 g) Fine Sea Salt, plus more for finishing
• 4 Fresh Thyme Sprigs, tied into a bundle
• 1 Dried Bay Leaf
• 1 Tbsp (8 g) All-Purpose Flour
• 1/3 cup (80 ml) Dry Sherry or Port
• 5 cups (1.8 L) Low-Sodium Beef Stock
• 1 tsp Worcestershire Sauce or Soy Sauce (optional)
• 8 (1-inch/2.5cm) slices Baguette, sliced on the bias
• 7 oz (200 g) Gruyère Cheese, freshly grated
• Black Pepper, freshly cracked, to taste