Johnny Marzetti | America's Test Kitchen

Ingredients

• 2 cups shredded sharp cheddar cheese
• 1 cup grated Parmesan cheese
• 1 tablespoon olive oil
• 2 celery ribs , chopped fine
• 1 onion , chopped fine
• 10 ounces white mushrooms , sliced thin
• 2 cups low-sodium chicken broth
• Salt and pepper
• 1 (14.5-ounce) can diced tomatoes with juice
• 8 ounces rotini pasta
• 3 cups leftover chili