French Onion Bites

Directions

1. 1.

   Preheat oven to 375°F with rack in middle.

2. 2.

   Arrange slices on a large baking sheet and bake in oven until golden, about 8 minutes. Let cool.

3. 3.

   Meanwhile, heat butter and oil in a 10-inch heavy skillet over medium heat until butter is melted, then cook onion, garlic, bay leaf, and thyme with 1/2 teaspoon salt and 1/4 teaspoon pepper, covered, stirring occasionally, 10 minutes.

4. 4.

   Uncover skillet and cook, stirring occasionally, until deep golden, about 10 to 15 minutes more. Add wine and cook until entirely evaporated, 1 to 2 minutes. Discard garlic clove, bay leaf, and thyme. Transfer to a small bowl and keep warm, covered.

5. 5.

   Preheat broiler.

6. 6.

   Arrange toasts on a large baking sheet, then top each with a rounded teaspoon of caramelized onions and sprinkle generously with shredded Gruyere. Broil 3- to 4-inches from heat until cheese is melted, 1 to 2 minutes (watch carefully).