Healthy Crockpot Tomato Lentil Soup

Name: Healthy Crockpot Tomato Lentil Soup
Prep time: 10 min
Cook time: 8 h
Total time: 8 h 10 min
Yield: 6 servings
Ingredients: 1 cup dried lentils, rinsed and drained; 2 cans (14.5 oz each) diced tomatoes; 1 onion, chopped; 3 cloves garlic, minced; 4 cups vegetable broth; 2 carrots, diced; 2 celery stalks, diced; 1 teaspoon dried basil; 1 teaspoon dried oregano; Salt and pepper to taste; 1 tablespoon olive oil; Fresh parsley for garnish

Highlighted under: Simple Inspiration

I absolutely love making this Healthy Crockpot Tomato Lentil Soup! It's my go-to dish for a cozy evening at home. The best part is how effortlessly I can throw all the ingredients together and let my crockpot do the work. This soup is not only packed with nutrition from the lentils and tomatoes, but it also fills the house with a comforting aroma that keeps everyone asking, 'What's cooking?' Plus, it's a fantastic way to sneak in veggies without anyone noticing. Perfect for meal prep too!

Created by

Nell Abernathy

Last updated on 2026-01-05T23:21:34.726Z

I remember the first time I made this Healthy Crockpot Tomato Lentil Soup on a chilly autumn evening. The lentils cooked down perfectly, absorbing all the delicious flavors from the herbs and spices. Each bowl is not only vibrant in color but also bursting with nutrients, making it a wholesome meal. It's both satisfying and guilt-free!

One tip I learned is to sauté the onions and garlic before adding them to the crockpot; this brings out their flavors beautifully and elevates the soup to another level. Trust me, this small step makes a big difference, creating a depth that you'll absolutely love!

        Why You'll Love This Recipe
        Heartwarming and comforting dish perfect for chilly days
Loaded with protein and fiber, keeping you full for hours
Easy to customize with your favorite vegetables or spices

      

Understanding Lentils

Lentils are a powerhouse of nutrition, providing both protein and fiber, which are essential in a balanced diet. In this soup, dried lentils are the main protein source, absorbing flavors beautifully during the cooking process. Make sure to rinse and drain them well before adding to the crockpot, as this helps eliminate any dust or debris that can occasionally cling to lentils. The variety of lentils you use can also affect the texture; for example, green lentils hold their shape better than red lentils, which tend to break down and create a creamier soup.

When cooking lentils, it’s important to ensure they are gently simmered without boiling vigorously. This helps them cook evenly and prevents any mushiness. If you're looking for a bit of chew in your soup, aim for a cooking time that allows the lentils to just reach tenderness without overcooking. If you find your soup is too thick for your liking, simply stir in more vegetable broth until you reach the desired consistency.

Flavor Building Techniques

Sautéing the onion and garlic before adding them to the crockpot is a key step in building flavor. This technique, known as 'blooming', enhances the aromatic qualities of these ingredients, which in turn will infuse the soup with a rich depth. You'll know your aromatics are ready when the onions are translucent and starting to soften, roughly 5 minutes of cooking should suffice. This small step can truly elevate the overall taste of the soup, providing a robust foundation to complement the tomatoes and lentils.

If you want to experiment with the flavors further, consider adding spices such as cumin or paprika for a hint of warmth. Fresh herbs, such as thyme or rosemary, can also provide a lovely herbal note. However, add them later in the cooking process or as a garnish to maintain their brightness and prevent them from losing their flavor during the longer cooking times.

Make-Ahead and Storage Tips

This Healthy Crockpot Tomato Lentil Soup is perfect for meal prep and can be cooked in bulk. Once cooked, it can be cooled and stored in airtight containers in the refrigerator for up to 5 days. If you're planning to make it further in advance, consider freezing the soup. Portions can be stored in freezer-safe bags or containers for up to 3 months. When reheating, gently simmer on the stove or use a microwave until heated through. If the soup thickens in the fridge or freezer, just add a splash of broth to thin it out.

If you have leftovers, they make for a delightful lunch option the next day. Pair the soup with a crusty piece of whole-grain bread or a side salad for a filling meal. I often enjoy topping it with a dollop of Greek yogurt for a creamy touch or some croutons for added crunch. Feel free to adjust the seasoning as needed after reheating, as flavors can sometimes mellow.

Ingredients

Gather these simple ingredients to whip up this nutritious soup:

Ingredients for Healthy Crockpot Tomato Lentil Soup

1 cup dried lentils, rinsed and drained
2 cans (14.5 oz each) diced tomatoes
1 onion, chopped
3 cloves garlic, minced
4 cups vegetable broth
2 carrots, diced
2 celery stalks, diced
1 teaspoon dried basil
1 teaspoon dried oregano
Salt and pepper to taste
1 tablespoon olive oil
Fresh parsley for garnish

Feel free to modify the ingredients based on what you have at home!

Instructions

Follow these simple steps to make a hearty soup:

Sauté Aromatics

In a pan, heat the olive oil over medium heat. Add the chopped onion and minced garlic, sautéing until fragrant and translucent for about 5 minutes.

Combine Ingredients

Transfer the sautéed onion and garlic to the crockpot. Then add the lentils, diced tomatoes, vegetable broth, carrots, celery, and herbs. Stir to combine.

Cook the Soup

Cover the crockpot and cook on low for 8 hours or high for 4 hours, until the lentils are tender.

Season and Serve

Before serving, taste the soup and season with salt and pepper as needed. Garnish with fresh parsley and enjoy!

Serve warm with a slice of crusty bread for a complete meal.

Pro Tips

For extra depth of flavor, consider adding a splash of balsamic vinegar or a pinch of red pepper flakes right before serving.

Ingredient Substitutions

If you're unable to source dried lentils, canned lentils can be a convenient alternative. Drain and rinse one can to replace the dried lentils, but be aware that you should reduce the cooking time significantly, adding them only in the last hour of cooking to prevent them from becoming overly soft.

For a heartier version, consider adding sweet potatoes or butternut squash. These can be diced and added at the same time as the carrots and celery. They not only enhance the flavor profile but also contribute additional nutrients and a touch of sweetness to balance the acidity of the tomatoes.

Serving Variations

This soup can stand alone, but serving it with various toppings can enhance the experience. Crumbled feta or Parmesan cheese adds a savory richness, while a sprinkle of chili flakes gives it a nice kick if you prefer some heat. I also like a swirl of balsamic glaze just before serving for a touch of acidity that brightens the flavors.

For a more filling meal, consider serving the soup over cooked quinoa or rice. This adds a wholesome grain element and makes the dish even more satisfying. Alternatively, serve it in a bread bowl for a delightful twist that allows you to enjoy the soup and the bowl together!

Questions About Recipes

→ Can I freeze this soup?

Yes, this soup freezes well! Just let it cool completely before transferring it to airtight containers.

→ What can I substitute for lentils?

You can use other legumes like chickpeas or black beans, but adjust cooking times accordingly.

→ How can I make this soup spicier?

Add a pinch of red pepper flakes or a diced jalapeño during the cooking process for extra heat.

→ Is this recipe vegan-friendly?

Absolutely! This soup is completely plant-based and perfect for vegans.