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Slow Cooker Lentil Soup

Image of lentil soup in a freezer bag with the title "Slow cooker lentil soup"

What’s the easiest way to fill your freezer?

Make tons of soup, of course!

Soup is an incredibly popular freezer meal, and why not? You throw a bunch of ingredients into a bag- not having to cook it first- and then put it in the freezer for later.

I’ve already made a Sweet Potato Black Bean Chili during this 25 Days of Freezer Meals series, and I figured one more wouldn’t hurt. Not only is this Slow Cooker Lentil Soup an easy dump meal, it’s also vegetarian, which makes it really cheap.

Image of soup ingredients

Did you know you can find lentils for around a dollar a bag? Yep, I’ve found 1-pound bags at my local Dollar Tree. I only used about half the bag for this recipe, so 50 cents worth. An amazing deal for a food that’s packed with protein!

Can you add meat to Slow Cooker Lentil Soup?

Sure! Chicken, sliced sausage, or even ground beef would go well in this. If you use ground beef, I recommend cooking it first before adding it to the freezer bag. Meat would help stretch out the meal and give you more servings.

Image of uncooked lentils in a colander

Do you have to soak the lentils before cooking?

Not necessarily. Since you’re slow cooking these, they’ll be cooking for a few hours anyway so it’s not a big deal. You can soak them ahead of time if you plan to make this on the stovetop, which can save time.

Image of lentil soup in a freezer bag

Can you cook Lentil Soup first before freezing?

Absolutely! You’ll still cook on high for 4-5 hours. And you can pour the soup into individual containers, or into one or two gallon-sized freezer bags. All you need to do then is thaw in the fridge overnight and heat up on the stove for a few minutes.

Looking for more freezer meal ideas? Check out the other recipes in my 25 Days of Freezer Meals series!

Slow Cooker Lentil Soup

Slow Cooker Lentil Soup

Yield: 6 servings
Prep Time: 15 minutes
Cook Time: 5 hours
Total Time: 5 hours 15 minutes

This Slow Cooker Lentil Soup is a quick and easy vegetarian freezer meal and is perfect for the cold winter months! Full of vegetables and super filling!


  • 2 cups brown or green lentils, picked through and rinsed
  • 1 medium onion, chopped
  • 2 cups sliced carrots
  • 1 can diced tomatoes
  • 1 tablespoon minced garlic
  • 1 tablespoon Italian seasoning
  • 8 cups water or vegetable broth (On cooking day)


  1. Add all ingredients except water to a labled gallon-sized freezer bag and lay flat in the freezer.
  2. When ready to cook, thaw overnight in the fridge. Add to your slow cooker along with 8 cups of water or vegetable broth and cook on high for 4-5 hours until the lentils are fully cooked.

21 Crock Pot Freezer Meals - Flour On My Face

Sunday 8th of November 2020

[…] Lentil Soup: Lentil soup is perfect all year long. […]

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