Tuscan Chicken Soup

Name: Tuscan Chicken Soup
Ingredients: 8 thick slices sourdough bread; 2 tablespoons olive oil, plus more for toasting bread; 2 tablespoons salted butter; 3 boneless, skinless chicken thighs, diced; 1 small onion, diced; 2 cloves garlic, minced; 2 tablespoons tomato paste; One 14-ounce can diced tomatoes; One 28-ounce can tomato puree; 4 cups low-sodium chicken broth; One 15-ounce can cannellini beans; 1 to 2 tablespoons honey; 2 teaspoons chopped fresh oregano, plus whole sprigs, for garnish; Kosher salt and freshly ground black pepper; One 6.52-ounce jar marinated artichoke hearts, drained; 4 small burrata balls