This thick and savory zucchini soup uses blended potatoes to create a rich texture without the need for a flour roux. It is an excellent way to utilize a garden surplus while providing a comforting meal.
List of ingredients
- 2 tablespoons butter – used for sautéing the aromatic vegetables.
- 1 yellow onion, diced – provides a sweet and savory foundation.
- 2 cloves garlic, minced – adds a pungent, deep flavor profile.
- 1/4 teaspoon dried rosemary – introduces a subtle piney aroma.
- 1/4 teaspoon dried thyme – adds an earthy, herbal quality.
- 1/4 teaspoon celery salt – enhances the overall savory taste.
- 1/4 teaspoon black pepper – provides a mild spice.
- 1/4 teaspoon salt – used to balance and enhance flavors.
- 1 pinch cayenne pepper (optional) – adds a hint of heat to the broth.
- 5 cups zucchini, cut into chunks – the primary vegetable for the soup.
- 3 cups chicken broth – serves as the liquid base.
- 1 tablespoon soy sauce or Worcestershire sauce – adds a rich umami depth.
- 2 russet potatoes, equal to 1 pound – acts as a natural thickening agent.
- 1/2 cup half and half or heavy cream – for a velvety, rich finish.
- 1 cup cheddar cheese, shredded – adds a sharp and salty creaminess.
step-by-step instructions
- Prepare the cheese: Shred the cheddar cheese from a solid block. Let it sit at room temperature so it melts smoothly into the hot soup without clumping.
- Sauté the onion: Melt the butter in a large soup pot over medium heat. Add the diced onion and cook for about 5 minutes until softened and translucent.
- Cook vegetables and spices: Stir in the minced garlic, zucchini chunks, and all the dried seasonings. Cook for 5 minutes, stirring occasionally to prevent sticking.
- Process the potatoes: Peel and rinse the russet potatoes. Cut them into small, equal-sized pieces so they cook evenly and quickly.
- Simmer the soup: Add the diced potatoes, chicken broth, and soy sauce to the pot. Bring the mixture to a boil, then reduce the heat to a simmer, skimming any brown foam from the top.
- Tenderize the vegetables: Simmer the pot partially covered for approximately 20 minutes. The vegetables should be very fork-tender before you proceed.
- Blend until smooth: Remove the pot from the heat. Use an immersion blender directly in the pot, or transfer the mixture to a blender in batches and process until completely smooth.
- Add final touches: Return the soup to low heat. Stir in the half and half and gradually sprinkle in the shredded cheese, stirring until fully combined.
Optimizing Your Zucchini Preparation
When to Peel Zucchini
Small to medium zucchini have tender skins that blend easily into the soup. Only peel the zucchini if you are using jumbo-sized varieties, as their skins can become tough and bitter. Using a standard vegetable peeler is the most efficient method for removing these thick skins.
Selecting the Ideal Zucchini Size
Zucchini that are approximately 6 inches long are ideal for this recipe. At this size, the flesh is firm and the seeds are small. Larger zucchini often have spongy seeds that can alter the consistency of the blended soup.
Uniform Cutting Techniques
Cut the zucchini and potatoes into uniform chunks to ensure they cook at the same rate. Use a sharp chef’s knife to make clean cuts, which helps maintain the vegetable integrity. Even pieces prevent some chunks from overcooking while others remain hard.
Ingredient Substitutions and Modifications
Using Vegetable Broth
To make this soup meat-free, replace the chicken broth with a high-quality vegetable broth. This substitution maintains the liquid ratio and flavor profile. Ensure the vegetable broth is low-sodium if you are sensitive to salt.
Alternative Thickening Agents
While russet potatoes provide the best natural thickness, you can use Yukon Gold potatoes for a slightly creamier texture. If you must avoid potatoes entirely, a small amount of cornstarch slurry can be stirred in at the end. However, this will change the flavor and nutritional profile of the soup.
Experimenting with Different Cheeses
Sharp white cheddar provides a tangier flavor compared to orange cheddar. Parmesan cheese adds a saltier, nuttier note that pairs well with the zucchini. Gouda is another excellent option for those who prefer a milder, creamier taste.
Dairy-Free Cream Alternatives
For a dairy-free version, replace the half and half with full-fat coconut milk or cashew cream. These options provide a similar richness and opacity. Use a plant-based meltable cheese substitute or omit the cheese entirely.
Enhancing the Flavor Profile
Adding Fresh Finishing Herbs
Stirring in fresh parsley or chives just before serving adds a bright contrast to the cooked flavors. These herbs provide a pop of color and a fresh aromatic quality. Avoid boiling the fresh herbs, as this will dull their flavor.
Adjusting the Heat Levels
If you prefer a spicier soup, increase the amount of cayenne pepper or add a pinch of red pepper flakes during the sauté phase. For a milder version, omit the cayenne entirely. The soy sauce already provides a depth that supports a variety of heat levels.
Boosting the Umami Element
The soy sauce is crucial for adding a savory umami depth that balances the sweetness of the zucchini. You can also use a small amount of mushroom powder for an even deeper earthy flavor. This ensures the soup doesn’t taste flat or overly bland.
Storage and Preservation Methods
Refrigeration Guidelines
Store any leftover soup in an airtight container in the refrigerator. It will remain fresh and safe to eat for up to 3 days. Ensure the soup is cooled slightly before sealing the container to prevent excessive condensation.
Freezing Procedures
This soup freezes well for up to 3 months. Use freezer-safe containers or heavy-duty freezer bags, leaving a small amount of space at the top for expansion. Remove as much air as possible to prevent freezer burn.
Proper Thawing Techniques
Thaw frozen soup slowly in the refrigerator overnight. Avoid thawing the soup on the counter at room temperature to maintain food safety. Once thawed, gently stir the soup to reintegrate any separated ingredients.
Reheating Best Practices
Stovetop Reheating Method
Warm the soup in a pot over low to medium heat. Stir frequently to ensure the heat is distributed evenly and the dairy does not scorch. If the soup has thickened too much during storage, stir in a splash of broth or water.
Microwave Reheating Tips
Heat the soup in microwave-safe bowls in short 1-minute bursts. Stir the soup between each interval to avoid hot spots. Covering the bowl with a lid or paper towel prevents splattering.
Preventing Dairy Separation
To avoid separation or curdling, reheat the soup slowly on low heat. Stirring vigorously helps the fats and liquids re-emulsify. Avoid bringing the soup to a rolling boil once the cream and cheese have been added.
Serving and Pairing Suggestions
Complementary Bread Pairings
Serve the soup with toasted sourdough bread for a tangy crunch. Garlic bread or a warm baguette are also excellent choices that complement the garlic in the recipe. Croutons topped with herbs can add a necessary textural contrast.
Creative Garnish Ideas
A swirl of heavy cream or a dollop of sour cream on top adds visual appeal and richness. A sprinkle of smoked paprika or freshly cracked black pepper provides a professional finish. Freshly grated Parmesan can also be added for extra saltiness.
Recommended Side Dishes
Pair this soup with a crisp green salad dressed in a light vinaigrette to balance the richness of the cream. Roasted carrots or a side of steamed asparagus also pair well with the flavors of zucchini. A simple fruit salad provides a refreshing end to the meal.
Troubleshooting Common Issues
Solving a Thin Consistency
If the soup is too thin, simmer it without a lid for an additional 10-15 minutes to reduce the liquid. Ensure you have blended the potatoes thoroughly, as they are the primary thickener. You can also add a small amount of mashed potato if necessary.
Correcting a Soup That is Too Thick
If the soup becomes too thick, stir in additional chicken or vegetable broth one tablespoon at a time. Continue stirring over low heat until the desired consistency is reached. Adding a bit of water also works in a pinch.
Removing Bitterness from the Taste
Bitterness usually occurs if jumbo zucchini skins were not removed. You can try to balance this by adding a tiny pinch of sugar or an extra tablespoon of butter. In severe cases, straining the soup through a fine-mesh sieve may help.
Frequently Asked Questions
Can I use yellow squash instead of zucchini?
Yes, yellow summer squash has a very similar flavor and texture to zucchini. You can substitute it in a 1:1 ratio or use a mixture of both for a different color.
Is this recipe gluten-free?
This recipe is naturally gluten-free as long as you use a gluten-free soy sauce, such as tamari. Check the labels on your chicken broth to ensure there are no hidden gluten additives.
Can I use a potato masher instead of a blender?
Yes, you can use a potato masher if you prefer a chunkier, more rustic texture. Keep in mind that the soup will not be creamy or smooth like the blended version.
Do I have to use russet potatoes?
Russet potatoes are recommended because their high starch content helps thicken the soup. However, Yukon Gold or red potatoes can be used, though the result may be slightly less thick.
How do I prevent the cheese from clumping?
Shred the cheese yourself from a block and let it reach room temperature. Stir the cheese in slowly on low heat to ensure it melts evenly into the broth.
Print
Creamy Zucchini and Potato Soup
- Total Time: 50 minutes
- Yield: 6 servings 1x
- Diet: General
Description
This creamy zucchini soup is the BEST way to use up garden zucchini with no need for a roux to make it nice and thick! Simply blend seasoned zucchini with potatoes to create a thick and flavorful broth. Add a touch of cream and your choice of cheese if desired for even more indulgence!
Ingredients
- 2 tablespoons butter
- 1 yellow onion, diced
- 2 cloves garlic, minced
- 1/4 teaspoon dried rosemary
- 1/4 teaspoon dried thyme
- 1/4 teaspoon celery salt
- 1/4 teaspoon pepper
- 1/4 teaspoon salt
- 1 pinch cayenne (optional)
- 5 cups zucchini, cut into chunks
- 3 cups chicken broth
- 1 tablespoon soy sauce
- 2 russet potatoes, equal to 1 pound
- 1/2 cup half and half or heavy cream
- 1 cup cheddar cheese, shredded
Instructions
- Prepare: Shred cheese from a block and set aside to come down to room temperature.
- Sauté: Melt butter in a soup pot over medium heat. Add the onions and cook until softened, about 5 minutes.
- Season: Add garlic, zucchini, and seasonings. Cook for 5 minutes, stirring occasionally.
- Prep Potatoes: Peel and rinse the potatoes, then cut them into small pieces of equal size.
- Simmer: Add the potatoes, chicken broth, and soy sauce. Bring to a boil, then reduce heat to a simmer.
- Cook: Simmer, partially covered, until the vegetables are very fork tender, about 20 minutes.
- Blend: Remove from heat and use an immersion blender or transfer to a blender in batches and blend until smooth.
- Finish: Optional: Transfer back to heat on low. Stir in the half and half, then slowly sprinkle in the cheese and stir to combine.
Notes
The dairy is optional; this soup tastes great without it. For cheese, you can experiment with Sharp White Cheddar, Parmesan, or Gouda. The addition of soy sauce adds umami and enhances the other flavors without being tasteable.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Soup
- Method: Simmering
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 226 kcal
- Sugar: 4 g
- Sodium: 963 mg
- Fat: 13 g
- Saturated Fat: 8 g
- Unsaturated Fat: 5 g
- Trans Fat: 0 g
- Carbohydrates: 20 g
- Fiber: 2 g
- Protein: 9 g
- Cholesterol: 37 mg