Low Calorie Soup Recipes: Chicken Zucchini Soup

• The method browns the chicken first, creating browned bits that dissolve into the broth. That one-pan step gives lean soup more depth than adding every ingredient to broth at once.
• Zucchini goes in near the end, so it becomes tender while staying distinct in the bowl. That timing matters when the soup will be portioned for several lunches.
• Lemon is added off heat instead of boiled hard, which keeps its flavor sharper. The result works with a side salad, a measured starch, or simply a larger bowl.

• 1 tablespoon olive oil (14 g)
• 1 pound boneless, skinless chicken breast, cut into pieces (454 g)
• 1 medium yellow onion, diced (150 g)
• 2 celery stalks, diced (100 g)
• 3 garlic cloves, minced (9 g)
• 1 teaspoon kosher salt (6 g)
• 1 can no-salt-added diced tomatoes with juices (411 g)
• 4 cups unsalted chicken broth (946 g)
• 2 medium zucchini, diced (400 g)
• 2 tablespoons lemon juice (30 g)
• 1/4 cup chopped parsley (15 g)
• 1/2 teaspoon black pepper (1 g)

Ingredient notes

• Use boneless, skinless chicken breast cut into half-inch pieces. Small pieces cook quickly and distribute through every bowl. Thigh works too, but it changes the richness and makes the finished broth less lean overall in character.
• Choose no-salt-added diced tomatoes if you want tighter control of the broth's seasoning. Their juice supplies body and mild acidity. Crushed tomatoes make a thicker soup, while fresh tomatoes need longer simmering to soften properly.
• Celery and onion form the savory base, so cut them evenly for predictable texture. Yellow onion is the most neutral choice. Leeks can replace onion, though they bring a softer, slightly sweeter allium flavor profile.
• Medium zucchini are preferable because very large ones carry more watery seeds. Cut them into similar half-inch pieces and add them after the broth simmers. Summer squash is a direct trade-off: softer texture and a slightly sweeter flavor.
• Fresh lemon juice belongs at the end, where it brightens the tomato broth without dominating it. Parsley adds a clean finish. Dill is a trade-off, bringing a more pronounced herbal note that may steer the soup toward Mediterranean flavors.

1. 1Prepare the vegetables

   Dice the onion and celery into small, even pieces. Cut zucchini into half-inch chunks, mince the garlic, and measure remaining ingredients before heating the pot. Keeping the zucchini separate prevents it from going in before the broth has developed flavor.

2. 2Brown the chicken

   Warm olive oil in a Dutch oven over medium-high heat. Add chicken, salt, pepper, and Italian seasoning. Cook, stirring occasionally, until the pieces lose their pink exterior and pick up golden edges, about five minutes. Transfer chicken to a bowl; leave any browned bits behind.

   

3. 3Soften the base

   Reduce heat to medium and add onion and celery to the same pot. Cook until the onion looks translucent and the celery softens, about five minutes. Stir in garlic for thirty seconds, just until fragrant, scraping the pot bottom with a wooden spoon.

4. 4Build the broth

   Pour in diced tomatoes with their juices and chicken broth. Bring the liquid to a gentle simmer, scraping up every browned bit. Return the chicken and any collected juices to the pot. Simmer uncovered for eight minutes so the flavors begin to settle together.

   

5. 5Cook the zucchini

   Add zucchini and continue at a gentle simmer until it is tender but not collapsing, about six to eight minutes. Check the thickest chicken piece with an instant-read thermometer; it should reach 165°F in the center before the pot comes off heat.

6. 6Finish and portion

   Remove the pot from heat, then stir in lemon juice and parsley. Taste the broth and adjust salt or pepper only after the lemon has been mixed through. Ladle into bowls immediately, or cool the soup in shallow containers before packing individual portions.

• Brown the chicken in batches if the pot is narrow. Crowding creates steam, which limits the golden edges that give the broth its deeper flavor. A wide, heavy pot makes this first stage easier to manage.
• Keep the diced zucchini near one-half inch. Smaller pieces soften rapidly and can disappear into the broth; larger pieces stay firm longer and may need extra simmering. Uniform cuts make portioning more consistent.
• Taste only after the lemon juice goes in. Tomato brands, broth brands, and lemon acidity vary, so final salt adjustment belongs at the end. Add a small pinch, stir fully, then taste again.
• For a clearer broth, skim any foam after the soup reaches a gentle simmer. Do not boil aggressively; steady bubbles cook the vegetables evenly while keeping the chicken pieces tender.

Serve this soup with a sharp green salad dressed in olive oil and vinegar, which adds crunch without competing with the lemony broth. A spoonful of plain Greek yogurt can add tang, while sliced avocado brings a creamy contrast. If your meal plan includes starch, pair a bowl with a small portion of roasted potatoes or cooked rice. For lunch boxes, pack parsley separately and scatter it over the warmed soup just before eating.