French Onion White Bean Dip

Name: French Onion White Bean Dip
Ingredients: 2 tablespoons olive oil; 2 large sweet onions, thinly sliced lengthwise (about 5 1/2 cups); 2 teaspoons fresh thyme leaves, divided, plus more for garnish; 2 teaspoons kosher salt, divided; 1/4 cup dry sherry; 2 (15-ounce) cans cannellini beans, rinsed and drained; 4 ounces cream cheese, softened; 1 ounce Parmesan cheese, grated (about 1/4 cup); 1 garlic clove, grated; 1/2 teaspoon black pepper; 1/2 teaspoon Worcestershire sauce; 6 ounces Gruyѐre cheese, shredded (about 1 1/2 cups), divided; Toasted baguette slices, for serving