Panera Onion Soup
List of Ingredients ¼ cup sweet cream butter 8 cups sliced yellow onions (4 to 5 med. onions) 2 14-ounce cans beef broth (I used Swanson) ¾ cup chicken broth (Swanson again) 3 tablespoons all-purpose flour 1½ cups water 1 tablespoon ketchup 1½ teaspoons ground black pepper 1½ teaspoons salt ¼ teaspoon dried thyme ¼ …