Substitutions

• Chicken thighs: Boneless, skinless chicken thighs can replace chicken breasts and will give you slightly richer, especially tender pieces of chicken.
• Different beans: Great northern beans or chickpeas can replace either the kidney beans or cannellini beans if that is what you have in the pantry.
• Different pasta: Small shells, elbow macaroni, or another small pasta work well when ditalini is unavailable.
• Kale instead of spinach: Chopped kale can replace baby spinach, but give it a little more cooking time since the leaves are sturdier.
• Vegetable broth: You can use vegetable broth in place of chicken broth if that is what you keep on hand, although the finished soup will have a slightly different savory profile.
• Fresh tomatoes: If you have good ripe tomatoes to use up, diced fresh tomatoes can replace the canned diced tomatoes, though canned tomatoes provide especially consistent flavor.

Variations

• Add green beans: Stir in frozen green beans for even more vegetables and a little extra texture.
• Make it extra vegetable packed: Add chopped bell pepper, extra zucchini, or another carrot if you are trying to work more vegetables into dinner.
• Give it some heat: Add a small pinch of red pepper flakes with the seasonings for a gentle warmth that still lets the tomato and herbs shine.
• Make it cheesier: Add a little extra Parmesan at the end for a richer broth and a more pronounced cheesy finish.
• Keep the pasta separate: Cook the pasta on the stove and spoon it into individual bowls before adding the soup, especially if you expect plenty of leftovers.
• Add fresh herbs at serving: A little chopped parsley or basil on top gives each bowl a fresh finish and makes a simple dinner feel extra inviting.

Tips and Tricks

• Cut everything evenly: Similar sized pieces of chicken and vegetables cook more consistently and make the finished soup easier to eat.
• Rinse the beans well: Draining and rinsing canned beans keeps extra canning liquid from changing the texture or taste of your broth.
• Do not add the pasta at the beginning: Pasta needs to go in near the end so it stays tender rather than becoming overly soft during the long slow cooking time.
• Watch the pasta closely: Slow cookers vary, so start checking the noodles after about 20 minutes once you switch the cooker to HIGH.
• Taste before adding more salt: Chicken broth, canned tomatoes, beans, and Parmesan can all contribute salt, so wait until the end before making the final adjustment.
• Cook pasta separately for leftovers: The original recipe specifically recommends this approach because it prevents pasta from soaking up too much broth overnight.
• Keep extra Parmesan on the table: I have learned that if there is Parmesan within arm's reach, somebody in my family is going to want another spoonful.

Serving Ideas

• Crusty bread: A thick piece of warm bread is ideal for soaking up the tomato broth at the bottom of the bowl.
• Garlic bread: If my kids get to vote, garlic bread beside soup usually wins because it turns an ordinary weeknight dinner into something that feels a little more fun.
• Simple green salad: A crisp salad with a bright dressing balances the warm, hearty soup without adding much work.
• Extra Parmesan: Put a bowl of grated Parmesan on the table and let everyone finish their own serving.
• Fresh herbs: A sprinkle of parsley or basil adds a fresh note and some extra color right before serving.
• Roasted vegetables: If you are feeding especially hungry people, a tray of roasted vegetables makes the meal even more substantial.

Storage and Make Ahead Tips

• Refrigerate leftovers promptly: Store cooled soup in an airtight container in the refrigerator for 2 to 3 days, following the storage guidance in the original recipe.
• Store pasta separately when possible: Separate pasta will hold its texture better and prevent the soup from becoming overly thick overnight.
• Add broth when reheating: If the soup thickens in the refrigerator, stir in a little chicken broth while warming it until you reach the consistency you like.
• Reheat gently: Warm individual portions on the stove or in the microwave until steaming hot, stirring occasionally so everything heats evenly.
• Prep vegetables in advance: Chop the onion, carrots, celery, garlic, and zucchini the night before so assembling the slow cooker in the morning takes only a few minutes.
• Freeze before adding pasta: For the best texture, freeze the chicken, bean, vegetable, and tomato portion of the soup, then add freshly cooked pasta after reheating.