Triple French Onion Soup

Name: Triple French Onion Soup
Ingredients: 3 Tbsp butter unsalted; 3 cups yellow onion about 2-3 onions, sliced thin; 2 cups leeks about 3 leeks, white and light green part only, washed thoroughly and sliced thin; 3-4 shallots sliced thin; 1 clove garlic minced; Salt and pepper; 1/2 cup dry sherry; 3/4 cup dry white wine I used Sauvignon blanc; 1 bay leaf; 2 sprigs of thyme; 4 1/2 cups chicken stock; 4-6 slices of baguette may need more slices to cover the whole top of the soup, toasted in the oven until golden brown and crisp; 1 lb Gruyere cheese grated; Thyme leaves for garnish