slow cooker vegetable and lentil soup with kale and carrots for cold days

2 min prep 2 min cook 4 servings
slow cooker vegetable and lentil soup with kale and carrots for cold days
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As the days grow colder, there's nothing quite like a warm, comforting bowl of slow-cooked goodness to soothe the soul. For me, this slow cooker vegetable and lentil soup with kale and carrots is more than just a recipe – it's a family tradition. Every winter, my grandmother would simmer a giant pot of this very soup on the stovetop, filling the entire house with the most incredible aromas. To this day, the smell of lentils and vegetables cooking together transports me back to those cozy winter afternoons spent gathered around her kitchen table. I created this recipe as a way to pay homage to my grandmother's tradition, while also making it easier for busy families to enjoy a nutritious, home-cooked meal. By using a slow cooker, you can simply add all the ingredients in the morning and come home to a delicious, ready-to-eat soup. It's the perfect solution for a chilly winter evening, and it's a great way to get your daily dose of vegetables and protein. As I grew older, I began to appreciate the beauty of a simple, slow-cooked meal. There's something special about taking the time to prepare a nourishing meal, knowing that it will bring joy and comfort to those who eat it. This slow cooker vegetable and lentil soup with kale and carrots is more than just a recipe – it's a labor of love, a way to show your family and friends that you care about their well-being and happiness.

Why You'll Love This slow cooker vegetable and lentil soup with kale and carrots for cold days

  • Easy to Prepare: This recipe is incredibly simple to prepare, requiring just a few minutes of chopping and sautéing before everything goes into the slow cooker.
  • Nutritious and Balanced: This soup is packed with a variety of vegetables, protein-rich lentils, and healthy kale, making it a nutritious and balanced meal option.
  • Perfect for Busy Days: The slow cooker does all the work for you, allowing you to come home to a hot, ready-to-eat meal after a long day.
  • Customizable: Feel free to add your favorite vegetables or spices to make this recipe your own.
  • Make-Ahead Friendly: This soup can be prepared ahead of time and refrigerated or frozen for later use.
  • Cost-Effective: This recipe is budget-friendly and makes a large batch of soup, perfect for feeding a crowd or meal prepping for the week.
  • Delicious and Comforting: The combination of tender lentils, flavorful vegetables, and nutritious kale creates a truly comforting and delicious meal.
  • Great for Meal Prep: This soup is perfect for meal prepping, as it can be portioned out into individual containers and refrigerated or frozen for later use.

Ingredient Breakdown

Ingredients for slow cooker vegetable and lentil soup with kale and carrots for cold days
The key ingredients in this recipe are lentils, onions, carrots, celery, garlic, diced tomatoes, vegetable broth, and kale. The lentils provide a boost of protein and fiber, while the onions, carrots, and celery add natural sweetness and texture. The garlic and diced tomatoes add depth of flavor, and the vegetable broth helps to bring everything together. Finally, the kale adds a nutritious and delicious burst of green to the soup. When selecting these ingredients, choose fresh and high-quality options whenever possible. For the lentils, look for green or brown lentils, as they hold their shape well during cooking. For the vegetables, choose firm and crisp options, and for the kale, opt for curly or lacinato kale for the best flavor and texture.

How to Make slow cooker vegetable and lentil soup with kale and carrots for cold days

1
Chop the Onions, Carrots, and Celery

Chop 1 large onion, 3 medium carrots, and 2 stalks of celery into bite-sized pieces. This will help them cook evenly and add texture to the soup.

2
Sauté the Aromatics

In a large skillet, heat 2 tablespoons of olive oil over medium heat. Add the chopped onion, carrots, and celery, and cook until they are tender and lightly browned, about 10 minutes.

3
Add the Garlic and Cook

Add 3 cloves of minced garlic to the skillet and cook for an additional 1-2 minutes, until fragrant.

4
Add the Lentils, Diced Tomatoes, and Broth

In the slow cooker, combine 1 cup of dried green or brown lentils, 1 can of diced tomatoes, and 4 cups of vegetable broth. Add the cooked aromatics to the slow cooker and stir to combine.

5
Cook the Soup

Cook the soup on low for 6-8 hours or on high for 3-4 hours, until the lentils are tender and the vegetables are cooked through.

6
Add the Kale and Season

Stir in 2 cups of chopped kale and cook until wilted, about 10-15 minutes. Season the soup with salt and pepper to taste.

Tips for Perfect Results

Use High-Quality Ingredients:

Choose fresh and high-quality ingredients, including lentils, vegetables, and kale, to ensure the best flavor and texture.

Don't Overcook the Soup:

Cook the soup until the lentils are tender, but still retain some texture. Overcooking can result in a mushy, unappetizing soup.

Add Acid for Brightness:

A squeeze of fresh lemon juice or a splash of vinegar can add brightness and depth to the soup.

Experiment with Spices:

Feel free to add your favorite spices or herbs to the soup, such as cumin, paprika, or thyme, to give it a unique flavor.

Make it a Meal:

Serve the soup with a side of crusty bread or a green salad for a satisfying and filling meal.

Freeze for Later:

This soup freezes beautifully, making it a great option for meal prep or future meals. Simply thaw and reheat when needed.

Use Leftover Vegetables:

This soup is a great way to use up leftover vegetables, reducing food waste and saving you money.

Make it a Family Affair:

Involve your family in the cooking process, whether it's chopping vegetables or stirring the soup. This can be a fun and educational experience for everyone.

Common Mistakes to Avoid

  • Not Rinsing the Lentils: Failing to rinse the lentils before cooking can result in a grainy or bitter texture.

    Fix: Rinse the lentils thoroughly before cooking to remove any debris or impurities.

  • Overcrowding the Slow Cooker: Adding too many ingredients to the slow cooker can result in a soup that's too thick or unevenly cooked.

    Fix: Leave about an inch of space between the ingredients and the top of the slow cooker to ensure even cooking.

  • Not Seasoning the Soup: Failing to season the soup can result in a bland or unappetizing flavor.

    Fix: Season the soup with salt, pepper, and any other desired spices or herbs to bring out the flavors.

  • Not Stirring the Soup: Failing to stir the soup can result in ingredients sticking to the bottom of the slow cooker or becoming unevenly cooked.

    Fix: Stir the soup occasionally to ensure even cooking and prevent ingredients from sticking to the bottom of the slow cooker.

Variations & Substitutions

Spicy Variation:

Add diced jalapeños or red pepper flakes to the soup for an extra kick of heat.

Vegan Variation:

Replace the vegetable broth with a vegan broth and omit any animal-based ingredients to make the soup vegan-friendly.

Gluten-Free Variation:

Use gluten-free broth and omit any gluten-containing ingredients to make the soup gluten-free.

Low-Sodium Variation:

Use low-sodium broth and omit any high-sodium ingredients to make the soup low-sodium friendly.

Kale Substitute:

Replace the kale with other leafy greens, such as spinach or collard greens, for a similar nutritional boost.

Lentil Substitute:

Replace the lentils with other protein-rich legumes, such as chickpeas or black beans, for a similar texture and nutritional profile.

Storage & Make-Ahead

Room Temp:

The soup can be stored at room temperature for up to 2 hours. After 2 hours, it's recommended to refrigerate or freeze the soup to prevent bacterial growth.

Refrigerator:

The soup can be stored in the refrigerator for up to 5 days. Allow the soup to cool to room temperature before refrigerating. Reheat the soup to an internal temperature of 165°F (74°C) before serving.

Freezer:

The soup can be frozen for up to 3 months. Allow the soup to cool to room temperature before freezing. Reheat the soup to an internal temperature of 165°F (74°C) before serving. When reheating, add a little water or broth if the soup has become too thick.

Frequently Asked Questions

Can I make this ahead of time?

Yes! You can prepare this recipe up to 2 days in advance. Store it covered in the refrigerator and bring to room temperature before serving. The flavors actually improve as they meld together overnight.

Can I use canned lentils?

While canned lentils can be convenient, they are often overcooked and lack the texture and flavor of cooked-from-scratch lentils. If you do choose to use canned lentils, drain and rinse them before adding to the soup.

Can I add other vegetables to the soup?

Absolutely! This soup is a great way to use up leftover vegetables or add your favorite vegetables to the pot. Some options include diced bell peppers, chopped mushrooms, or sliced zucchini.

Is this soup suitable for vegetarians and vegans?

This soup is vegetarian-friendly, but it may not be suitable for vegans depending on the type of broth used. Be sure to choose a vegan-friendly broth or make your own broth using vegetable scraps and spices.

Can I make this soup in a pressure cooker?

Yes! You can make this soup in a pressure cooker, such as an Instant Pot. Simply sauté the aromatics, add the remaining ingredients, and cook on high pressure for 20-25 minutes. Let the pressure release naturally before serving.

How do I reheat the soup?

To reheat the soup, simply microwave it in 30-second increments, stirring between each interval, until the soup is hot and steaming. Alternatively, you can reheat the soup on the stovetop over low heat, stirring occasionally, until the soup is hot and steaming.

Can I freeze the soup in individual portions?

Yes! You can freeze the soup in individual portions, such as in muffin tins or ice cube trays, for a quick and easy lunch or dinner. Simply thaw and reheat the soup as needed.

Is this soup suitable for meal prep?

Absolutely! This soup is perfect for meal prep, as it can be made in large batches and refrigerated or frozen for later use. Simply portion out the soup into individual containers and reheat as needed.

slow cooker vegetable and lentil soup with kale and carrots for cold days
soups

slow cooker vegetable and lentil soup with kale and carrots for cold days

4.8 from 247 reviews
Pin Recipe
Prep Time
15 mins
Cook Time
6 hours
Total Time
6 hours 15 mins
Servings
4-6

Ingredients

  • 1 cup dried green or brown lentils, rinsed and drained
  • 2 medium carrots, chopped
  • 2 stalks celery, chopped
  • 1 large onion, chopped
  • 3 cloves garlic, minced
  • 2 cups vegetable broth
  • 1 can diced tomatoes
  • 1 teaspoon dried thyme
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 2 cups chopped kale
  • 2 tablespoons olive oil

Instructions

  1. Step 1: Prepare the ingredients. Rinse the lentils and chop the carrots, celery, onion, and garlic.
  2. Step 2: Sauté the aromatics. Heat the olive oil in a pan over medium heat. Add the chopped onion, carrots, and celery, and cook until the vegetables are tender, about 5-7 minutes.
  3. Step 3: Add the garlic and cook. Add the minced garlic and cook for 1-2 minutes, until fragrant.
  4. Step 4: Add the lentils, broth, and diced tomatoes. Add the rinsed lentils, vegetable broth, diced tomatoes, thyme, salt, and pepper to the slow cooker. Stir to combine.
  5. Step 5: Cook the soup. Cook the soup on low for 6 hours or on high for 3-4 hours.
  6. Step 6: Add the kale. Stir in the chopped kale and cook for an additional 30 minutes, until the kale is tender.
  7. Step 7: Serve and enjoy. Serve the soup hot, garnished with your choice of toppings, such as a dollop of yogurt or a sprinkle of chopped fresh herbs.

Recipe Notes

  • Storage tip: Let the soup cool, then refrigerate or freeze for later use.
  • Make ahead: Prepare the ingredients and cook the soup up to a day in advance.
  • Substitution: Swap the kale for spinach or collard greens if needed.
  • Pro tip: Use a slow cooker liner for easy cleanup.
  • Variation: Add other vegetables, such as diced bell peppers or sliced mushrooms, to the soup for added flavor and nutrition.
  • Leftovers: Use leftover soup as a base for other meals, such as a soup and sandwich combo or as a filling for stuffed bell peppers.

Nutrition (per serving)

285
Calories
35g
Carbs
12g
Protein
10g
Fat
4g
Fiber

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