Healthy Crockpot Spinach Lentil Soup

Name: Healthy Crockpot Spinach Lentil Soup
Prep time: 15 min
Cook time: 4 h
Total time: 4 h 15 min
Yield: 6 servings
Ingredients: 1 cup dried lentils, rinsed; 4 cups vegetable broth; 2 cups fresh spinach, chopped; 1 onion, diced; 2 carrots, diced; 2 celery stalks, diced; 3 cloves garlic, minced; 1 teaspoon cumin; 1 teaspoon thyme; Salt and pepper to taste; Juice of 1 lemon

Highlighted under: Simple Planning

I love making this Healthy Crockpot Spinach Lentil Soup because it's not only nourishing but also incredibly easy to prepare. The lentils provide a hearty base, while fresh spinach adds vibrant flavor and nutrition. Cooking it in the crockpot allows the ingredients to meld beautifully, delivering a warm, comforting dish that's ready when I am. Plus, it’s a fantastic way to sneak more veggies into my family's diet without them even realizing it!

Created by

Jemima Fox

Last updated on 2026-01-11T21:29:34.605Z

When I first made this Healthy Crockpot Spinach Lentil Soup, I was amazed at how a few simple ingredients could create such depth of flavor. The combination of lentils, spinach, and spices simmering together creates an aroma that fills my kitchen with warmth. Slowing cooking it allows all the flavors to develop, making each bite a delightful experience.

One of my favorite tips is to add a splash of lemon juice just before serving. This brightens up the soup beautifully and enhances the earthy flavors of the lentils. It's a simple tweak that takes this dish from good to great!

        Why You'll Love This Recipe
        Packed with protein and fiber for a wholesome meal
Easy to prepare and perfect for meal prep
Hearty and comforting while being low in calories

      

Understanding the Ingredients

Each ingredient in this soup plays a crucial role in delivering both flavor and nutrition. The lentils serve as a protein-packed base, providing a hearty texture that satisfies. Fresh spinach not only adds vibrant color but also boosts the nutritional profile with its vitamins and minerals. The combination of onions, carrots, and celery—often referred to as the ‘mirepoix’—creates a flavorful foundation that enhances the overall taste. It's essential to rinse the lentils thoroughly to remove any impurities and ensure they cook evenly.

Herbs and spices are pivotal in elevating the flavor of this dish. Cumin brings a warm, earthy note while thyme adds a subtle depth that complements the vegetables. Adjusting the seasoning with salt and pepper at the end of cooking allows for a final balance, as flavors can intensify during the slow cooking process. If you're adventurous, consider adding a pinch of smoked paprika for a smoky twist or replacing thyme with rosemary for a different aromatic profile.

Cooking Technique Tips

Using a crockpot is an excellent way to let the flavors meld together slowly, making the soup more cohesive. It's important to layer the ingredients properly; adding the vegetables on top of the lentils and broth ensures they cook without becoming mushy. Cooking on low heat for 4 hours allows the lentils to soften perfectly—if you're in a hurry, you can cook it on high for 2-3 hours, but the flavor may not reach its full potential.

Incorporating the spinach during the last 15 minutes of cooking is key to maintaining its vibrant color and nutrients. Stirring it in just before serving allows it to wilt but not overcook, preserving that fresh taste and texture. For an even creamier soup, blend a portion of the soup before adding the spinach—this creates a custardy base while keeping the remaining lentils and vegetables intact for a pleasing bite.

Ingredients

Ingredients:

Main Ingredients

1 cup dried lentils, rinsed
4 cups vegetable broth
2 cups fresh spinach, chopped
1 onion, diced
2 carrots, diced
2 celery stalks, diced
3 cloves garlic, minced
1 teaspoon cumin
1 teaspoon thyme
Salt and pepper to taste
Juice of 1 lemon

Instructions

Instructions:

Combine Ingredients

In your crockpot, add the lentils, vegetable broth, onion, carrots, celery, garlic, cumin, thyme, salt, and pepper. Stir well to combine.

Cook the Soup

Cover and cook on low for 4 hours or until the lentils are tender.

Add Spinach

In the last 15 minutes of cooking, stir in the chopped spinach. Allow it to wilt down.

Finish and Serve

Before serving, add a splash of lemon juice for extra flavor. Adjust seasoning as needed.

Pro Tips

For an extra kick, consider adding a pinch of red pepper flakes or a dash of hot sauce before serving. Additionally, feel free to customize the soup with your favorite vegetables or legumes.

Make-Ahead and Storage

This soup is ideal for meal prep as it stores well in the refrigerator for up to 5 days. Make a large batch at the start of the week and portion it out for quick lunches or dinners. When reheating, I recommend adding a splash of vegetable broth or water to loosen the texture, as the soup will thicken as it sits. It's easy to customize each serving with different toppings, such as a dollop of yogurt for creaminess or a sprinkle of chili flakes for heat.

For longer storage, Freeze the soup in airtight containers for up to 3 months. When ready to enjoy, thaw overnight in the refrigerator and reheat on the stove over medium heat or in the microwave. Be sure to stir occasionally while reheating to ensure even warmth, and adjust the consistency with a little added broth if necessary.

Serving Suggestions and Variations

This Healthy Crockpot Spinach Lentil Soup can be enjoyed on its own or as a side to a crusty loaf of bread for a complete meal. For an added flair, consider garnishing with fresh herbs like parsley or basil before serving. A sprinkle of grated Parmesan can also enhance the flavor, though it’s best added just before serving to retain its sharpness.

If you're looking to switch things up, consider incorporating other vegetables such as bell peppers or zucchini. You can also add cooked grains like quinoa or bulgur for extra heartiness. For a spicier version, throw in some diced jalapeño or a dash of hot sauce to simmer with the broth. The versatility of this soup means you can easily adapt it to suit your personal taste or what you have on hand!

Questions About Recipes

→ Can I use canned lentils instead of dried?

Yes, you can use canned lentils. Just reduce the cooking time to 1-2 hours since they are already cooked.

→ How long will leftovers last?

Leftover soup can be stored in the refrigerator for up to 5 days and can also be frozen for up to 3 months.

→ Is this soup gluten-free?

Yes, all the ingredients used in this soup are gluten-free.

→ Can I add other vegetables?

Absolutely! Feel free to add any vegetables you have on hand, such as bell peppers or zucchini.