Easy orzo miso garlic soup with chicken and spinach is a cozy one-pot meal packed with savory umami flavor. Flexible, comforting, and easy to make vegan too.

This easy orzo miso garlic soup with chicken and spinach is the kind of meal I love making on busy weeknights. It’s warm, comforting, flavorful, and comes together with simple ingredients I usually already have in the kitchen. The miso gives the broth a savory umami depth, while the garlic makes everything smell absolutely amazing.
What I really love about this soup is how flexible it is. You can use leftover rotisserie chicken, uncooked chicken, swap the spinach for other greens, or even make it completely vegan. It’s one of those forgiving recipes that works with what you have on hand.

Why You’ll Like This Recipe

1. It’s easy enough for busy weeknights and comes together in one pot.
2. The soup is cozy, comforting, and packed with savory umami flavor.
3. It’s very flexible and forgiving. You can easily swap ingredients based on what you have.
4. It works well with leftover chicken or uncooked chicken.
5. You can make it vegetarian or vegan with simple substitutions.
6. The orzo makes the soup hearty enough to be a complete meal.
7. It reheats beautifully for meal prep.

Ingredients and Substitutions

1. Cooking oil
   You can use avocado oil, olive oil, vegetable oil, or any neutral-tasting oil.
2. Garlic
   Fresh garlic gives the best flavor here. Thinly sliced garlic gives little bites of garlicky goodness while minced garlic melts more into the broth.
3. Red miso paste
   Red miso gives the soup a deeper and richer flavor. You can also use white miso or yellow miso if that’s what you have.
4. Chicken broth
   Chicken broth gives the soup more savory flavor, but vegetable broth works great too if you want to make it vegetarian or vegan.
5. Orzo
   Orzo makes the soup hearty and comforting, but many other small pasta shapes work well too. More details below.
6. Chicken
   This recipe is perfect for leftover rotisserie chicken, poached chicken, or roasted chicken. You can also use uncooked boneless skinless chicken breast or thigh meat.
7. Spinach
   Baby spinach wilts quickly and works perfectly in soup. You can also use kale, Swiss chard, bok choy, napa cabbage, or frozen spinach.
8. Green onion and cilantro
   These fresh garnishes brighten up the soup. You can skip them if preferred.
9. Lao Gan Ma chili crisp
   Totally optional, but highly recommended if you like heat and extra texture.

What Kind of Miso Can Be Used?

One of the best things about this recipe is that almost any miso works.
1. Red Miso
Red miso has a deeper, saltier, and more intense flavor. It gives the soup a richer, savory taste. This is my favorite for this recipe.
2. White Miso
White miso is milder, sweeter, and less salty. It creates a lighter and gentler broth.
3. Yellow Miso
Yellow miso falls somewhere between white and red miso and works very well too.
4. Mixed Miso
You can even combine different miso types for a more balanced flavor.

What Is the Best Substitute for Orzo?

Orzo is great because it cooks quickly and gives the soup a comforting texture, but there are many easy substitutes:
1. Small Pasta options: Ditalini, Small shells, Acini di pepe, Stelline, Elbow macaroni
2. Rice options: Jasmine rice, brown rice
3. Grain options: pearl couscous, quinoa, farro
**Keep in mind that different substitutes may require slightly different cooking times and extra broth.

Tips for the Best Soup

1. Do not burn the garlic or it can turn bitter very quickly.
2. Keep the soup at a gentle simmer instead of a rolling boil after adding miso.
3. Orzo continues to absorb liquid as it sits, so the soup will thicken over time.
4. Add extra broth or water when reheating leftovers if needed.
5. Stir in the spinach only before serving for the freshest texture and color.
6. Rotisserie chicken makes this recipe extra easy and fast.
7. Chicken thighs stay juicier than chicken breast, especially if reheating leftovers.
8. Chili crisp adds wonderful heat, crunch, and umami flavor.

How to Make It Vegan

This soup is very easy to make vegan. The soup is still incredibly comforting and flavorful even without meat.
Simply swap:
1. Chicken broth → vegetable broth
2. Chicken → tofu, edamame, mushrooms, beans like chickpeas, white beans, or other beans of your choice
You can also add: Shiitake mushrooms for extra umami, Crispy tofu for protein, White beans for a heartier soup

What to Serve This With

1. Crusty bread or garlic bread
2. Simple cucumber salad
3. Roasted vegetables
4. Kimchi or pickled vegetables
5. Soft-boiled eggs
6. Grilled cheese sandwich

Storage & Reheating

1. Let the soup cool completely before storing.
2. Store in an airtight container in the refrigerator for up to 3–4 days.
3. Freeze individual portions for up to 1 month.
4. The orzo will continue to absorb liquid as it sits, so add extra broth or water when reheating.
5. Reheat gently on the stove or in the microwave until warmed through.

Frequently Asked Questions

1. Can I use uncooked chicken instead of cooked chicken?
   Yes. Thinly sliced boneless skinless chicken breast or thigh meat works great.
2. Can I freeze this soup?
   Yes, though the orzo may soften more after thawing and reheating.
3. Is this soup spicy?
   No. The soup itself is mild. Chili crisp is optional for heat.
4. Can I use frozen spinach?
   Yes. Just thaw and squeeze out excess moisture first if preferred.
5. Can I make this gluten-free?
   Yes. Use gluten-free pasta or substitute with rice or quinoa.
6. Why does my soup get thicker the next day?
   The orzo continues absorbing liquid as it sits in the fridge.
7. Can I make this ahead of time?
   Yes. I recommend adding the spinach only when reheating and ready to serve.

This easy orzo miso garlic soup is one of those recipes that feels cozy and nourishing without requiring much effort. I especially love how adaptable it is depending on what I have in the fridge. Whether you make it with leftover chicken, extra vegetables, or turn it completely vegan, it still turns out delicious and comforting every time.