Orecchiette with Mini Chicken Meatballs

INGREDIENTS

• 3/4 cup grated Romano
• 1 1/2 cups low-sodium chicken stock, hot
• 8 ounces bocconcini mozzarella, halved
• 1 tablespoon ketchup
• 1/2 cup freshly grated Parmesan
• 1 pound orecchiette pasta
• 1/4 cup plain bread crumbs
• 4 cups cherry tomatoes, halved
• 1/4 cup chopped fresh flat-leaf parsley
• 2 large eggs, lightly beaten
• 1 pound ground chicken
• 3/4 teaspoon salt
• 3/4 teaspoon freshly ground black pepper
• 1/4 cup olive oil
• 1/2 cup chopped fresh basil leaves
• 1 tablespoon whole milk