2 jumbo sweet onions, cut into quarters then sliced thin
1 Tablespoon butter
1 Tablespoon extra virgin olive oil
salt & pepper
1 Tablespoon Worcestershire sauce
1/4 teaspoon dried thyme
2 small dried bay leafs (or 1 big one)
1 teaspoon sugar
1/2 cup beef broth
1/2 cup finely shredded mozzarella cheese
20 wonton wrappers
vegetable oil

For the Au Jus Dipping Sauce:
1/2 cup beef broth
1 teaspoon Worcestershire sauce
dash garlic salt