Low Carb Tomato Instant Pot Soup

Tomato soup is a classic comfort food, but traditional recipes can be surprisingly high in carbohydrates. This low-carb Instant Pot tomato soup recipe delivers all the rich flavor you crave, without the added sugar and starch. It’s quick, easy, and perfect for a cozy lunch or dinner.

The Magic of Instant Pot Tomato Soup (Low Carb!)

The Instant Pot makes this recipe incredibly simple. By pressure cooking the tomatoes and other vegetables, you extract maximum flavor in a fraction of the time compared to stovetop methods. This also results in a beautifully smooth and creamy soup, even without adding a lot of cream. Plus, the one-pot cooking means fewer dishes to wash! This recipe focuses on fresh, whole ingredients and steers clear of added sugars commonly found in canned tomato products. We’ll rely on natural sweetness and savory elements for a balanced and satisfying taste.

Why Choose Low Carb?

A low-carbohydrate diet can offer several potential benefits, including improved blood sugar control, weight management, and increased energy levels. Even if you’re not strictly following a low-carb lifestyle, reducing your carbohydrate intake from processed foods and added sugars can be a healthy choice. This soup offers a delicious and nutritious way to enjoy a classic dish without compromising your dietary goals.

Key Ingredients for a Low-Carb Tomato Soup

• Tomatoes: The star of the show! Fresh tomatoes provide the best flavor, but high-quality canned tomatoes (whole or crushed) work well too. Look for varieties that are naturally sweet.
• Aromatic Vegetables: Onions, garlic, and celery form the base of the soup, adding depth and complexity to the flavor profile.
• Broth: Use low-sodium vegetable or chicken broth to control the salt content.
• Olive Oil: Adds richness and helps to sauté the vegetables.
• Sweetener (Optional): A small amount of a low-carb sweetener (like erythritol or stevia) can balance the acidity of the tomatoes. Taste and adjust according to your preference.
• Herbs and Spices: Basil, oregano, thyme, salt, and pepper enhance the flavor. A pinch of red pepper flakes adds a touch of heat.
• Heavy Cream or Coconut Cream (Optional): For a creamier texture, add a splash of heavy cream or full-fat coconut cream at the end.

Step-by-Step: Making Your Low Carb Instant Pot Tomato Soup

This recipe is designed to be straightforward and easy to follow. Here’s how to make delicious low-carb tomato soup in your Instant Pot:

Preparing the Ingredients

1. Chop the Vegetables: Dice the onion, celery, and garlic. If using fresh tomatoes, roughly chop them as well. Canned tomatoes can be used whole or crushed, depending on your preference.

2. Measure the Broth: Have your low-sodium broth readily available.

3. Gather Herbs and Spices: Prepare your herbs, spices, and optional low-carb sweetener.

4. Optional Cream: If you plan to add cream, have it ready to stir in at the end.

Cooking the Soup

1. Sauté the Aromatics: Turn on the Instant Pot to the “Sauté” function. Add olive oil. Once heated, add the onion, celery, and garlic. Sauté until softened, about 5-7 minutes.

2. Add the Tomatoes and Broth: Add the tomatoes and broth to the Instant Pot. Stir in the herbs, spices, and optional low-carb sweetener.

3. Pressure Cook: Secure the Instant Pot lid and set the valve to the “Sealing” position. Cook on “Manual” or “Pressure Cook” for 10 minutes.

4. Release the Pressure: Allow the pressure to release naturally for 10 minutes, then quick release any remaining pressure.

5. Blend the Soup: Carefully remove the lid. Use an immersion blender to blend the soup until smooth. Alternatively, you can transfer the soup to a regular blender in batches. Be careful when blending hot liquids.

6. Add Cream (Optional): Stir in heavy cream or coconut cream (if using) until well combined.

7. Season to Taste: Taste and adjust seasonings as needed. Add more salt, pepper, or sweetener to your preference.

Serving and Garnishing

Serve the soup hot, garnished with your favorite toppings. Some excellent low-carb options include:

• Fresh Basil: Adds a burst of fresh flavor.
• Grated Parmesan Cheese: Provides a salty, savory element.
• Sour Cream or Greek Yogurt: Adds tanginess and creaminess.
• Avocado: Offers healthy fats and a creamy texture.
• Crushed Pork Rinds: A crunchy, low-carb alternative to croutons.
• A drizzle of olive oil: Adds richness and visual appeal.

Variations and Customizations for Your Tomato Soup

This recipe is a great starting point, but feel free to experiment and customize it to your liking. Here are some ideas to get you started:

Add Roasted Vegetables

Roasting the vegetables before adding them to the Instant Pot can enhance their flavor. Roasting tomatoes, onions, garlic, and bell peppers brings out their natural sweetness and adds a depth of flavor to the soup. Simply roast the vegetables at 400°F (200°C) for 20-30 minutes, or until softened and slightly caramelized, before adding them to the Instant Pot.

Spice it Up

Add a pinch of red pepper flakes or a dash of hot sauce for a spicy kick. You can also experiment with other spices like smoked paprika or chili powder.

Make it Creamier

For an even richer and creamier soup, add a tablespoon or two of cream cheese or mascarpone cheese along with the heavy cream or coconut cream.

Add Protein

Add cooked chicken, sausage, or tofu to make it a heartier meal. Cooked and crumbled bacon is another great option for adding protein and flavor.

Different Herbs and Spices

Experiment with different herbs and spices to create unique flavor profiles. Try adding rosemary, sage, or a bay leaf to the soup.

Using Different Tomatoes

While fresh tomatoes are ideal, you can also use canned diced tomatoes, crushed tomatoes, or even tomato paste. Tomato paste will add a more concentrated tomato flavor. If using canned tomatoes, be sure to choose a variety without added sugar.

Add Greens

Stir in some chopped spinach or kale towards the end of cooking for added nutrients. The greens will wilt quickly in the hot soup.

Tips and Tricks for the Best Low-Carb Tomato Soup

Here are some helpful tips and tricks to ensure your low-carb tomato soup turns out perfectly every time:

Choose Quality Ingredients

Using high-quality ingredients will make a big difference in the flavor of your soup. Opt for ripe, flavorful tomatoes and fresh herbs whenever possible.

Don’t Skip the Sautéing Step

Sautéing the onions, celery, and garlic before pressure cooking helps to develop their flavor and adds depth to the soup.

Adjust the Sweetness to Your Liking

The amount of low-carb sweetener you need will depend on the sweetness of your tomatoes and your personal preference. Start with a small amount and add more to taste.

Be Careful When Blending Hot Soup

When blending hot soup, be sure to vent the blender to prevent pressure from building up. Remove the center piece of the blender lid and cover the opening with a towel.

Store Leftovers Properly

Store leftover soup in an airtight container in the refrigerator for up to 3-4 days. You can also freeze the soup for longer storage.

Reheating Tips

Reheat the soup in a saucepan over medium heat or in the microwave. If the soup has thickened during storage, add a little broth or water to thin it out.

Avoid Burning

Make sure there’s enough liquid in the Instant Pot to prevent burning. The broth should cover the tomatoes and vegetables.

Check the Seal

Ensure the Instant Pot’s sealing ring is properly installed to maintain pressure during cooking.

FAQ: Low Carb Tomato Instant Pot Soup

Here are some frequently asked questions about making low-carb tomato soup in the Instant Pot:

Is tomato soup keto-friendly?

Traditional tomato soup is often high in carbohydrates due to added sugar and starches. However, this recipe is designed to be low-carb and keto-friendly by using fresh ingredients, low-carb sweeteners (optional), and avoiding added sugars.

Can I use canned tomatoes instead of fresh tomatoes?

Yes, you can use canned tomatoes. Choose high-quality, unsweetened canned tomatoes (whole, diced, or crushed).

What is the best low-carb sweetener to use?

Erythritol, stevia, or monk fruit are good low-carb sweetener options. Start with a small amount and add more to taste.

Can I freeze tomato soup?

Yes, tomato soup freezes well. Allow the soup to cool completely before transferring it to freezer-safe containers or bags.

How long does tomato soup last in the fridge?

Tomato soup can be stored in the refrigerator for up to 3-4 days.

What can I serve with tomato soup?

Low-carb grilled cheese sandwiches, salads, and roasted vegetables are great accompaniments to tomato soup.

Can I make this recipe without an Instant Pot?

Yes, you can make this recipe on the stovetop. Sauté the vegetables in a large pot, then add the tomatoes, broth, and seasonings. Simmer for 30-40 minutes, or until the vegetables are tender. Blend the soup with an immersion blender or transfer to a regular blender.

Can I add other vegetables to the soup?

Absolutely! Feel free to add other low-carb vegetables like bell peppers, zucchini, or cauliflower to the soup.

Can I use bone broth instead of regular broth?

Yes, bone broth adds extra nutrients and flavor to the soup.

How can I make the soup thicker?

If you want a thicker soup, you can add a small amount of xanthan gum or glucomannan powder. Start with a very small amount (about 1/4 teaspoon) and whisk it in thoroughly to avoid clumping.