The Best High Protein Low Carb Chicken Soup – Comforting, Fresh, and Satisfying

This chicken soup checks all the boxes: hearty, light, and packed with protein. It’s the kind of bowl that keeps you full without weighing you down. The broth is clean and flavorful, with tender chicken and crisp-tender veggies that don’t turn mushy.

You get a cozy, homemade feel with none of the carb-heavy fillers. It’s quick enough for a weeknight and special enough to share.

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The Best High Protein Low Carb Chicken Soup - Comforting, Fresh, and Satisfying

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Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Ingredients Method

Ingredients

  

• 1.5 pounds boneless, skinless chicken breasts (or thighs if you prefer)
• 1 tablespoon olive oil
• 1 medium onion, diced
• 3 cloves garlic, minced
• 3 ribs celery, sliced
• 2 medium carrots, sliced thin (optional if you need ultra low carb)
• 1 small zucchini, diced
• 1 cup cauliflower florets, small bite-size
• 6 cups low-sodium chicken broth
• 1 bay leaf
• 1 teaspoon dried thyme (or 1 tablespoon fresh, chopped)
• 1 teaspoon dried oregano
• 1 teaspoon kosher salt (plus more to taste)
• 1/2 teaspoon black pepper
• 1/4 teaspoon crushed red pepper flakes (optional for heat)
• Juice of 1/2 lemon (about 1 tablespoon), plus wedges for serving
• 1/4 cup fresh parsley, chopped
• 2 cups baby spinach or chopped kale
• Optional boosters: 1 teaspoon grated fresh ginger, 1 teaspoon turmeric, 1 tablespoon coconut aminos or tamari (gluten-free, low carb) for depth

Method

 

1. Prep the aromatics and veggies. Dice the onion, mince the garlic, and slice the celery and carrots. Chop the zucchini and break the cauliflower into small florets. Keep the spinach and parsley for the end.
2. Sweat the aromatics. Warm the olive oil in a large pot over medium heat. Add onion and celery with a pinch of salt. Cook 4–5 minutes until softened, stirring often. Add garlic and cook 30 seconds until fragrant.
3. Build the base. Stir in carrots, zucchini, and cauliflower. Add thyme, oregano, black pepper, and red pepper flakes. Cook 2 minutes to wake up the spices. If using ginger or turmeric, add them now.
4. Add broth and bay leaf. Pour in the chicken broth and add the bay leaf. Bring to a gentle boil.
5. Poach the chicken. Lower the heat to a simmer. Nestle in the chicken breasts. Cover and simmer 12–16 minutes, depending on thickness, until the chicken reaches 165°F/74°C and is just cooked through.
6. Shred the chicken. Transfer the chicken to a cutting board. Let rest 3 minutes, then shred with two forks into bite-size pieces.
7. Finish the soup. Return the shredded chicken to the pot. Stir in spinach and parsley. Simmer 2–3 minutes until greens wilt. Add lemon juice and taste. Adjust salt, pepper, and acidity as needed. For a deeper savory note, add a splash of coconut aminos or tamari.
8. Serve hot. Ladle into bowls. Garnish with extra parsley and lemon wedges. Add more red pepper flakes if you like heat.

Why This Recipe Works

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Lean protein, smart veggies: We use chicken breast for plenty of protein, then load up on low-carb vegetables that add color and crunch.

Clean, bright broth: A quick sauté of aromatics builds flavor fast, while a squeeze of lemon and fresh herbs at the end keeps it fresh.

Simple technique, great texture: Poaching the chicken directly in the broth keeps it moist. Shredding near the end prevents overcooking.

Make-ahead friendly: The soup reheats beautifully, and the flavors deepen by the next day without getting heavy.

What You’ll Need

• 1.5 pounds boneless, skinless chicken breasts (or thighs if you prefer)
• 1 tablespoon olive oil
• 1 medium onion, diced
• 3 cloves garlic, minced
• 3 ribs celery, sliced
• 2 medium carrots, sliced thin (optional if you need ultra low carb)
• 1 small zucchini, diced
• 1 cup cauliflower florets, small bite-size
• 6 cups low-sodium chicken broth
• 1 bay leaf
• 1 teaspoon dried thyme (or 1 tablespoon fresh, chopped)
• 1 teaspoon dried oregano
• 1 teaspoon kosher salt (plus more to taste)
• 1/2 teaspoon black pepper
• 1/4 teaspoon crushed red pepper flakes (optional for heat)
• Juice of 1/2 lemon (about 1 tablespoon), plus wedges for serving
• 1/4 cup fresh parsley, chopped
• 2 cups baby spinach or chopped kale
• Optional boosters: 1 teaspoon grated fresh ginger, 1 teaspoon turmeric, 1 tablespoon coconut aminos or tamari (gluten-free, low carb) for depth

Step-by-Step Instructions

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1. Prep the aromatics and veggies. Dice the onion, mince the garlic, and slice the celery and carrots.

   Chop the zucchini and break the cauliflower into small florets. Keep the spinach and parsley for the end.

2. Sweat the aromatics. Warm the olive oil in a large pot over medium heat. Add onion and celery with a pinch of salt.

   Cook 4–5 minutes until softened, stirring often. Add garlic and cook 30 seconds until fragrant.

3. Build the base. Stir in carrots, zucchini, and cauliflower. Add thyme, oregano, black pepper, and red pepper flakes.

   Cook 2 minutes to wake up the spices. If using ginger or turmeric, add them now.

4. Add broth and bay leaf. Pour in the chicken broth and add the bay leaf. Bring to a gentle boil.
5. Poach the chicken. Lower the heat to a simmer.

   Nestle in the chicken breasts. Cover and simmer 12–16 minutes, depending on thickness, until the chicken reaches 165°F/74°C and is just cooked through.

6. Shred the chicken. Transfer the chicken to a cutting board. Let rest 3 minutes, then shred with two forks into bite-size pieces.
7. Finish the soup. Return the shredded chicken to the pot.

   Stir in spinach and parsley. Simmer 2–3 minutes until greens wilt. Add lemon juice and taste. Adjust salt, pepper, and acidity as needed.

   For a deeper savory note, add a splash of coconut aminos or tamari.

8. Serve hot. Ladle into bowls. Garnish with extra parsley and lemon wedges. Add more red pepper flakes if you like heat.

How to Store

• Fridge: Cool completely, then store in airtight containers for up to 4 days.

  The flavor improves by day two.

• Freezer: Portion into freezer-safe containers and freeze up to 3 months. Leave a little headspace for expansion.
• Reheat: Warm gently on the stovetop over medium-low heat until hot. If frozen, thaw overnight in the fridge first.

  Add a squeeze of fresh lemon to brighten after reheating.

• Meal prep tip: Keep greens separate and stir them in just before eating to keep color and texture vibrant.

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Health Benefits

• High protein for satiety: Chicken breast delivers lean protein that supports muscle maintenance and keeps you full longer.
• Low carb, nutrient dense: Non-starchy vegetables like zucchini, cauliflower, and spinach add fiber, vitamins, and minerals without the carb load.
• Anti-inflammatory touches: Garlic, parsley, and optional turmeric and ginger bring antioxidants and supportive compounds.
• Light on sodium: Using low-sodium broth lets you control salt while keeping flavor high.

What Not to Do

• Don’t boil the chicken hard. A rolling boil makes it tough. Gentle simmering keeps it tender.
• Don’t overcook the veggies. Add greens at the end and keep cauliflower bite-size so the soup stays fresh and crisp.
• Don’t skip tasting. Adjust salt, pepper, and lemon at the end. Small tweaks make a big difference.
• Don’t overcrowd with starchy add-ins. Noodles, rice, or potatoes push carbs up and dull the clean flavor.

Recipe Variations

• Herby Lemon Chicken Soup: Add extra lemon zest and double the parsley.

  Finish with a swirl of olive oil.

• Spicy Southwest: Use cumin and smoked paprika, add diced green chiles, and top with cilantro and lime.
• Creamy (Still Low Carb): Stir in 1/2 cup unsweetened almond milk and 2 ounces light cream cheese at the end for a silky texture.
• Ginger Miso Boost: Add grated ginger while sautéing, then stir in 1–2 tablespoons white miso off heat. Keep it below boiling to preserve probiotics.
• Thighs Instead of Breasts: Swap in boneless, skinless thighs for richer flavor and extra tenderness.
• Extra Veg Load: Toss in mushrooms, chopped bell pepper, or shredded cabbage to bulk up volume without many carbs.

FAQ

Can I use rotisserie chicken?

Yes. Shred 3–4 cups of cooked chicken and add it during the last 5 minutes of simmering.

Reduce the poaching time step since the chicken is already cooked.

How can I make it even higher in protein?

Add an extra 0.5–1 pound of chicken, or stir in collagen peptides or unflavored whey isolate right before serving. Start with 1 scoop and whisk to dissolve.

Is this soup keto-friendly?

It can be. Keep carrots minimal or skip them, focus on leafy greens and cauliflower, and check your broth for hidden sugars.

The base recipe is naturally low in carbs.

What’s the best way to thicken without carbs?

Simmer uncovered to reduce the broth slightly, or purée a cup of the soup (mostly veggies) and stir it back in. You can also add a small amount of xanthan gum—start with 1/8 teaspoon.

Can I cook this in a slow cooker?

Yes. Add everything except spinach, parsley, and lemon to the slow cooker.

Cook on Low 4–5 hours or High 2–3 hours until chicken is done. Shred the chicken, return it, stir in spinach, parsley, and lemon, and warm for 5–10 minutes.

What about an Instant Pot version?

Use Sauté for aromatics, then add broth and chicken. Pressure cook on High for 8 minutes, quick release, shred chicken, add greens and lemon, and let sit on Keep Warm for 5 minutes.

How much salt should I use?

Start with 1 teaspoon kosher salt if using low-sodium broth.

Taste at the end and adjust. The right amount depends on your broth and personal preference.

Can I add beans?

You can, but they raise the carbs. If you’re not strict low carb, add 1 cup of white beans during the last 10 minutes for extra fiber and creaminess.

Final Thoughts

This high protein, low carb chicken soup is simple, bright, and deeply satisfying.

It’s an easy habit to keep—big flavor, little fuss, and great leftovers. Keep the technique the same, then tweak herbs, heat, and veggies to match your mood. One pot, clean ingredients, and a bowl you’ll actually crave.

About the Author

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Brandon D

Blogger/Fitness & Wellness Coach

I create quick, healthy, family-friendly recipes that make dinner simple, delicious, and stress-free.