Healthy Crockpot Tomato Basil Soup

Name: Healthy Crockpot Tomato Basil Soup
Prep time: 15 min
Cook time: 6 h
Total time: 6 h 15 min
Yield: 6 servings
Ingredients: 2 cans (28 oz each) crushed tomatoes; 1 large onion, diced; 4 cloves garlic, minced; 3 cups vegetable broth; 1 cup fresh basil leaves, chopped; 2 tablespoons olive oil; Salt and pepper to taste; 1 teaspoon sugar (optional, to balance acidity)

Highlighted under: Healthy & Light

I absolutely love making this Healthy Crockpot Tomato Basil Soup on busy days when I want something nutritious without the fuss. The best part is how the slow cooking intensifies the flavors, making it taste like it simmered all day. With just a handful of fresh ingredients and a little prep time, I can set it and forget it. It's an excellent way to enjoy the richness of tomatoes combined with fragrant basil, and my whole family enjoys it. Plus, it's perfect for meal prepping for the week!

Created by

Maya Richardson

Last updated on 2026-01-13T02:37:13.785Z

When I first tried this Healthy Crockpot Tomato Basil Soup, I knew I had stumbled onto something special. The simplicity of the ingredients allows the natural sweetness of the tomatoes to shine through. Using fresh basil right from my garden added a depth of flavor that really elevated the dish. I made sure to sauté my onions and garlic before adding them to the pot, which gives the soup a wonderful base.

After trying various methods, I found that cooking this soup on low heat for several hours truly melds the flavors perfectly. When it's done, the aroma that fills the kitchen is incredible! I serve it with a drizzle of olive oil and fresh basil on top, which makes it feel gourmet without the effort.

        Why You'll Love This Soup
        Full of vibrant flavors that pack a punch
Easy to prepare and perfect for meal prep
Loaded with vitamins and nutrients for a healthy boost

      

The Importance of Slow Cooking

Slow cooking is the magic behind this Healthy Crockpot Tomato Basil Soup. By allowing the ingredients to meld together over several hours, the flavors truly deepen and develop. Cooking on low for 6 hours allows the sweetness of the onions and the richness of the tomatoes to shine. If you're pressed for time, cooking on high for 3 hours can still yield a delicious soup, but I highly recommend taking the longer route for the best results.

Crockpots maintain a consistent, low heat, which prevents the risk of burning ingredients or causing them to break down too quickly. As the soup simmers, you’ll notice the beautiful color transition from bright red to a more nuanced, deep crimson, reflecting the infusion of flavors. If you're cooking on high, just check occasionally to ensure it’s not simmering too aggressively.

Ingredient Spotlight: Fresh Basil

Fresh basil is more than just a garnish in this soup; it contributes a distinct aroma and flavor that elevates the tomato base. Adding it towards the end of the cooking process ensures that its vibrant taste remains intact instead of diminishing through prolonged heat. Look for basil leaves that are bright green and fragrant, and avoid any that are wilted or browning. If fresh basil is unavailable, you could use dried basil, but be aware that it'll lack the same potency—about one tablespoon would suffice.

In addition to its flavor, basil offers health benefits, including anti-inflammatory properties and antioxidants. Chop the leaves coarsely with a sharp knife to release their essential oils, making your soup taste fresher. If you're a fan of herbal flavors, feel free to experiment with other herbs such as thyme or oregano, but do so sparingly, as they can overpower the delicate balance of flavors.

Ingredients

Gather the following ingredients to create this delicious soup:

Ingredients

2 cans (28 oz each) crushed tomatoes
1 large onion, diced
4 cloves garlic, minced
3 cups vegetable broth
1 cup fresh basil leaves, chopped
2 tablespoons olive oil
Salt and pepper to taste
1 teaspoon sugar (optional, to balance acidity)

Now that you have all your ingredients, let’s get to cooking!

Instructions

Follow these simple steps to make your Healthy Crockpot Tomato Basil Soup:

Sauté the Aromatics

In a pan, heat the olive oil over medium heat. Add the diced onion and cook until translucent, about 5 minutes. Add the minced garlic and cook for an additional minute until fragrant.

Combine Ingredients in the Crockpot

Add the sautéed onion and garlic to the crockpot. Pour in the crushed tomatoes, vegetable broth, and sugar (if using). Stir well to combine.

Cook the Soup

Cover the crockpot and cook on low for 6 hours or high for 3 hours. The longer, the better to enhance the flavors.

Add Fresh Basil

About 30 minutes before serving, stir in the fresh basil and season with salt and pepper to taste.

Serve

Ladle the soup into bowls and drizzle with additional olive oil and garnish with fresh basil before serving.

Enjoy your healthy, homemade soup!

Pro Tips

For a creamier texture, blend the soup with an immersion blender before adding the basil. You can also add a splash of cream or cashew cream if desired.

Storage and Freezing Tips

This soup is an excellent candidate for meal prep, thanks to its flavor enhancement after a day in the fridge. Allow the soup to cool completely before transferring it to an airtight container, where it will keep well for up to 5 days in the refrigerator. When reheating, add a splash of vegetable broth to restore the desired consistency, as it may thicken over time.

For longer storage, consider freezing the soup. Portion it into freezer-safe containers, leaving some space at the top to allow for expansion. The soup can be frozen for up to 3 months. To reheat, defrost overnight in the refrigerator, then warm on the stovetop, stirring occasionally. If you find the soup too thick, once again, add a bit of broth for desired consistency.

Serving Suggestions

Ladle the soup into bowls and enjoy it as is, or elevate it by drizzling with quality extra virgin olive oil just before serving. This adds a silky texture and a flavor boost that complements the fresh ingredients beautifully. For added richness, consider topping with a dollop of creamy Greek yogurt or a sprinkle of Parmesan cheese to enhance the bowl’s savory profile.

Pair the soup with crusty bread or grilled cheese sandwiches for a classic combination that comforts the soul. If you prefer a lighter meal, serve it alongside a fresh garden salad overflowing with colorful vegetables. This soup’s versatility means it can easily transition from a hearty lunch to a cozy dinner, satisfying any palate.

Questions About Recipes

→ Can I freeze this soup?

Yes, this soup freezes well! Just make sure to leave out the fresh basil until you're ready to reheat.

→ What can I serve with this soup?

This soup pairs wonderfully with a side of crusty bread or a fresh garden salad.

→ Can I make this soup vegan?

Yes, this recipe is vegan as written! Just use vegetable broth and omit any dairy.

→ How can I adjust the flavors?

Feel free to experiment with additional herbs such as oregano or thyme for added depth. A splash of balsamic vinegar can also enhance the flavor.