Roasted Veggie Pasta for Kids

Name: Roasted Veggie Pasta for Kids
Ingredients: 4 plum tomatoes (about 1 pound), chopped into 1-inch pieces; 4 cloves garlic, smashed; 1 large zucchini (10 to 12 ounces), chopped into 1-inch pieces; 1 red bell pepper, chopped into 1-inch pieces; 1 large yellow onion, chopped into 1-inch pieces; 2 sprigs fresh rosemary; 2 tablespoons olive oil; 2 tablespoons tomato paste; Kosher salt and freshly ground black pepper; 12 ounces anellini siciliani (about 2 1/4 cups), or other small ring-shaped pasta; Freshly grated Parmesan, for serving (optional)