Zucchini and Potato Soup with Fresh Dill Recipe

Healthy Zucchini Potato Soup with Dill is a quick, easy, and comforting soup made with zucchini and instant mashed potatoes. Meatless but hearty enough to enjoy as a main dish, it also works well as a starter or side. Use fresh or frozen zucchini; to make it vegetarian, swap chicken broth for vegetable broth.

Zucchini Potato soup in a beige bowl with blue paisley napkin and spoon on the side

This zucchini soup is perfect at the end of summer or any time you want a light, creamy soup. The recipe uses two medium zucchini (about 4 cups shredded), so it’s a great way to use an abundance of zucchini. It pairs especially well with soft buns or crusty bread.

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Why You’ll Love This Recipe

  • Hearty. Although meatless, the soup is filling enough to serve as a meal.
  • Healthy. You can make it lower in sodium by choosing reduced-sodium broth or adjusting the potato flakes. Leftover mashed potatoes can be used as a substitute (see variations).
  • Flexible zucchini options. Use fresh or frozen shredded, sliced, diced, or chopped zucchini — everything will be pureed for a smooth texture.
  • Uses lots of zucchini. The recipe calls for two medium zucchini, about 4 cups shredded, making it a great way to use garden or market produce.

🥘 Ingredient Notes

You don’t need heavy cream or oil to make this creamy soup. The main ingredients that create texture and flavor are listed below.

ingredients in Zucchini Potato Soup in glass bowls, labelled
  • Zucchini. Fresh or frozen works. If using frozen, thaw and drain excess liquid; squeezing is not necessary.
  • Chicken broth. Provides a savory base; replace with vegetable broth for a vegetarian version.
  • Water. Helps hydrate the potato flakes and control soup consistency without adding salt.
  • Instant mashed potatoes (potato flakes). A quick thickener that creates creaminess without peeling and cooking whole potatoes.
  • Sour cream. Adds richness and body without heavy cream.
  • Sharp cheddar cheese. Adds tang and creaminess; low-fat options work well.
  • Parmesan cheese. Enhances overall cheesy flavor.
  • Fresh lime juice. A splash of citrus at the end brightens and balances the flavors.

See the recipe card below for exact quantities.

📖 Variations & Substitutions

  • Broth: Use vegetable broth or reduced-sodium broth to control salt.
  • Dill: Fresh dill can replace dried; use about double the amount when switching to fresh.
  • Instant mashed potatoes: Leftover mashed potatoes can substitute — use about 1/2 cup prepared for every 1/3 cup flakes and reduce liquid slightly. Blend leftover mash smooth before adding.
  • Lime juice: If using concentrate, use half the amount. Lemon juice can be used as an alternative.
  • Toppings: Try croutons, crispy fried onions, extra herbs like parsley, or additional Parmesan.

🔪 Step-by-Step: How to Make Healthy Zucchini Potato Soup

onion, chicken broth, dill, zucchini and water in pot
  1. Step 1: In a large pot, combine chicken broth (or vegetable broth), garlic, chopped onion, dried dill, shredded zucchini, and water. Bring to a boil, then reduce heat and simmer for 15 minutes.
vegetables being strained with a strainer scoop
  1. Step 2: Remove the vegetables from the broth with a slotted spoon or strain them, reserving the cooking liquid.
zucchini mixture pureed in food processor
  1. Step 3: Puree the cooked vegetables until smooth in a food processor or use an immersion blender to blend directly in the broth. Return the purée to the pot and whisk to combine.
broth with potatoes whisked in and sour cream, parmesan cheese, cheddar cheese and lime juice added to the pot
  1. Step 4: With heat low (or remove pot from heat), whisk in the instant potato flakes gradually until dissolved and the soup reaches your preferred thickness. Reduce heat to low and whisk in cheddar, sour cream, Parmesan, and lime juice until smooth and the cheese melts. Be careful when adding the flakes — they thicken and can bubble up quickly.
zucchini potato soup being ladled out of pot
  1. Step 5: Remove from heat and ladle into bowls.
Bowl of zucchini potato soup with garnishes and small white dish of parmesan cheese in the background
  1. Step 6: Garnish with fresh dill, extra Parmesan, and thinly sliced or shredded zucchini if desired.

Hint: If you prefer a thinner soup, add the instant mashed potatoes gradually — you can always add more later.

Expert Recipe Tips

  • Use reduced‑sodium broth to avoid excess salt from the potato flakes.
  • Defrost and drain frozen zucchini well before blending to prevent a watery soup.
  • Lightly brown the garlic and onion to bring out sweetness and deepen flavor.
  • Add potato flakes gradually to control thickness and avoid over-thickening.
  • Lower the heat after adding flakes to prevent splattering as the soup thickens.
  • Add lime juice at the end to brighten the bowl; use less if using concentrate.
  • Puree thoroughly for a velvety texture; strain or blend well if needed.
  • Finish with garnishes like fresh dill, Parmesan, cracked black pepper, or crispy onions for texture contrast.
Zucchini Potato soup in a beige bowl with blue paisley napkin and spoon on the side and a dish of parmesan cheese in background

👪 Serving Size

This recipe yields about 8 servings (approximately 1½ cups each). Scale the recipe up or down by adjusting the servings in the recipe card if needed.

🔢 WW Points

As written, this zucchini potato soup is Weight Watchers friendly at about 5 WW points per 1.5-cup serving. To lower points, use fat-free Parmesan and fat-free cheddar.

🥗 What to Eat with Zucchini and Potato Soup

This soup pairs beautifully with salads and sandwiches, or simply with warm bread or buns. For a lighter pairing, serve with cloud bread; for a heartier meal, a spinach-and-strawberry salad or open-faced tuna melts work nicely.

strawberry spinach pecan salad in a large bowl with flower print and wooden utensils

🌡️ Storage

Store the soup in a sealed container in the refrigerator for 3–4 days. It also freezes well for up to 3 months in an airtight container.

To reheat: Thaw in the refrigerator overnight and warm in the microwave or on the stove. Reheating preserves the creamy texture; thin with extra broth if it thickens too much.

buttered granny bun being dipped into a bowl of Zucchini Potato Soup

❔ Recipe FAQs

Are potato flakes the same as instant mashed potatoes?

Yes. Potato flakes are the dry form that, when hydrated, become instant mashed potatoes.

What if the soup is too thick or too thin?

If too thick, whisk in more broth until desired consistency. If too thin, add more instant potato flakes gradually or thicken with a roux or a cornstarch slurry.

Can I skip the lime juice?

Yes, but the citrus brightens and balances the creaminess. If you skip it, consider a splash of white wine vinegar or lemon juice instead.

Can I use a blender instead of an immersion blender?

Yes. Let hot soup cool slightly and blend in batches with the lid vented to avoid steam buildup.

What can I use instead of instant potato flakes?

Leftover mashed potatoes (well blended) or a peeled, diced potato simmered until soft and then puréed both work as substitutes.

If you want a comforting, creamy, and healthy soup, this zucchini and potato soup is an excellent choice.

More Creamy Soup Recipes

  • Healthy Pumpkin Soup (without cream)
  • Slow Cooker Broccoli Cheese Soup
  • Shredded Carrot Chowder (Award-winning)
  • Healthy Creamy Corn Chowder Recipe

Did your family love this recipe? Rating and commenting helps support recipe creators. If you enjoyed this soup, please leave a comment or star rating and share a photo if you like.

Zucchini Potato soup in a beige bowl with blue paisley napkin and spoon on the side
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Healthy Zucchini Potato Soup with Dill Recipe

A quick and creamy zucchini soup made with fresh or frozen zucchini and instant mashed potatoes. It’s meatless, filling, and ideal for a weeknight dinner or light lunch.
5 from 1 vote

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Course: Appetizer, dinner, lunch
Cuisine: American, Canadian, North American
Special Diet: weight watchers
Servings: 8 servings
Calories: 169kcal
Author: Terri Gilson
Prep Time: 15
Cook Time: 20
Total Time: 35

Equipment

  • food processor or immersion blender
  • large pot
  • fine mesh strainer or slotted spoon

Ingredients

  • 4 cups shredded zucchini about 2 medium zucchini
  • 1 medium onion, chopped
  • 4 garlic cloves, minced
  • 10 cups chicken broth
  • 2 cups water
  • ½ tablespoon dried dill
  • 180 g instant mashed potatoes / potato flakes about 1 1/3 cups dry
  • 1 cup non-fat sour cream
  • 2 cups low-fat sharp cheddar cheese
  • 3 tablespoon low-fat Parmesan cheese
  • 3 teaspoon fresh lime juice (about ½ a medium lime)

Garnish (optional)

  • fresh dill
  • Parmesan cheese
  • shredded or sliced zucchini
  • black pepper
US Customary – Metric

Instructions

  • Add broth, garlic, chopped onion, dill, shredded zucchini, and water to a medium pot. Bring to a boil, then reduce to medium-low and simmer 15 minutes.
  • Strain vegetables, reserving the broth, or remove with a slotted spoon.
  • Puree the cooked vegetables until smooth in a food processor, or use an immersion blender to blend into the broth.
  • Return purée to the broth and whisk. With heat low (or off), whisk in the dry instant potato flakes gradually until dissolved and the soup reaches your desired thickness. Then whisk in sour cream, cheddar, Parmesan, and lime juice until smooth. Keep heat low to melt the cheese without scorching.
  • Remove from heat and serve, garnished as desired.

Garnish

  • Garnish bowls with fresh dill, extra Parmesan, and optional shredded zucchini or cracked black pepper.

Notes

Expert Recipe Tips:

  • Use reduced‑sodium chicken broth to control the overall saltiness, since instant potato flakes can be salty.
  • Defrost and drain frozen zucchini well so the soup stays smooth and not watery.
  • Lightly brown garlic and onions to enhance sweetness and depth of flavor.
  • Add potato flakes gradually and lower heat to avoid splattering; you can always add more if needed.
  • Add lime juice at the end to brighten the finished soup.
  • Puree thoroughly for a velvety texture; strain if you want an extra-smooth finish.
  • Finish with garnishes such as fresh dill, extra Parmesan, or crispy onions for contrast.

🌡️ Storage

Store in a sealed container in the refrigerator for 3–4 days. Freeze up to 3 months in an airtight container.

To reheat: Thaw in the refrigerator overnight and warm in the microwave or on the stove. Add a little broth if the soup thickens too much.

Nutrition

Serving: 1.5cups | Calories: 169kcal
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