Ingredients:1 tablespoon good olive oil3 cups chopped yellow onions (3 onions)1 teaspoon chopped fresh thyme leaves2 teaspoons kosher salt1 teaspoon freshly ground black pepper3 tablespoons Worcestershire sauce1/3 cup canned chicken stock or broth1 tablespoon tomato paste2 1/2 pounds ground chuck (81 percent lean)1/2 cup plain dry bread crumbs (recommended: Progresso)2 extra-large eggs, beaten1/2 cup ketchup…
Ingredients:
- 1 tablespoon good olive oil
- 3 cups chopped yellow onions (3 onions)
- 1 teaspoon chopped fresh thyme leaves
- 2 teaspoons kosher salt
- 1 teaspoon freshly ground black pepper
- 3 tablespoons Worcestershire sauce
- 1/3 cup canned chicken stock or broth
- 1 tablespoon tomato paste
- 2 1/2 pounds ground chuck (81 percent lean)
- 1/2 cup plain dry bread crumbs (recommended: Progresso)
- 2 extra-large eggs, beaten
- 1/2 cup ketchup (recommended: Heinz)