This slow cooker vegetable soup is a hearty and nutritious meal that is perfect for any time of the year. With a medley of fresh vegetables and aromatic herbs, it’s a comforting dish that’s easy to prepare and full of flavor. Let your slow cooker do the work while you go about your day, and come home to a warm, delicious bowl of soup.
Most of the ingredients for this recipe are common and can be found in any supermarket. However, if you don't usually stock vegetable broth or diced tomatoes in your pantry, you might need to pick these up. The dried thyme and dried basil are also essential for adding depth of flavor, so make sure you have them on hand.

Ingredients For Slow Cooker Vegetable Soup Recipe
Vegetable broth: A flavorful liquid base made from simmering vegetables and herbs, essential for the soup's depth of flavor.
Carrots: Adds sweetness and a vibrant color to the soup.
Celery: Provides a subtle, aromatic flavor and a bit of crunch.
Onion: Adds a savory depth and enhances the overall flavor of the soup.
Potatoes: Makes the soup hearty and filling with their starchy goodness.
Diced tomatoes: Adds acidity and a rich tomato flavor to the soup.
Garlic: Provides a pungent, aromatic flavor that enhances the other ingredients.
Dried thyme: A fragrant herb that adds a subtle earthy flavor.
Dried basil: Adds a sweet, aromatic flavor that complements the other herbs.
Salt: Enhances the flavors of all the ingredients.
Black pepper: Adds a bit of heat and enhances the overall flavor of the soup.
Technique Tip for Making This Soup
When preparing the vegetables for this slow cooker vegetable soup, consider cutting them into uniform sizes. This ensures even cooking and a consistent texture throughout the soup. Additionally, sautéing the onions and garlic in a bit of olive oil before adding them to the slow cooker can enhance their flavors, adding depth to the final dish.
Suggested Side Dishes
Alternative Ingredients
vegetable broth - Substitute with chicken broth: If you are not strictly vegetarian, chicken broth can add a richer flavor.
vegetable broth - Substitute with mushroom broth: Mushroom broth provides a deep, umami flavor that complements the vegetables well.
chopped carrots - Substitute with parsnips: Parsnips have a similar texture and a slightly sweeter taste.
chopped celery - Substitute with fennel: Fennel adds a slight anise flavor that can enhance the soup's complexity.
chopped onion - Substitute with leeks: Leeks offer a milder, sweeter flavor compared to onions.
chopped potatoes - Substitute with sweet potatoes: Sweet potatoes add a different texture and a hint of sweetness.
diced tomatoes - Substitute with crushed tomatoes: Crushed tomatoes can provide a similar flavor and texture.
minced garlic - Substitute with garlic powder: Use garlic powder if fresh garlic is unavailable; adjust the quantity to taste.
dried thyme - Substitute with fresh thyme: Fresh thyme can be more aromatic; use three times the amount of dried thyme.
dried basil - Substitute with fresh basil: Fresh basil offers a more vibrant flavor; use three times the amount of dried basil.
salt - Substitute with soy sauce: Soy sauce can add a savory depth and additional umami flavor.
black pepper - Substitute with white pepper: White pepper provides a similar heat but with a slightly different flavor profile.
Alternative Recipes Similar to This Vegetable Soup
How to Store or Freeze Your Vegetable Soup
Allow the soup to cool completely before storing. This helps prevent condensation, which can lead to a watery texture.
Transfer the vegetable soup into airtight containers. For easy portion control, consider using individual serving-sized containers.
Label each container with the date. This ensures you keep track of how long the soup has been stored.
Store the containers in the refrigerator if you plan to consume the soup within 3-4 days.
For longer storage, place the containers in the freezer. The vegetable soup can be frozen for up to 3 months without losing its flavor and texture.
When ready to eat, thaw the soup in the refrigerator overnight if frozen. This gradual thawing helps maintain the vegetables' texture.
Reheat the soup on the stovetop over medium heat, stirring occasionally until heated through. Alternatively, you can reheat it in the microwave, stirring every minute to ensure even heating.
If the soup appears too thick after reheating, add a splash of vegetable broth or water to achieve the desired consistency.
Taste and adjust the seasoning if needed before serving. Sometimes, soups can lose a bit of their seasoning punch after being stored.
How to Reheat Leftovers
For stovetop reheating:
- Pour the leftover vegetable soup into a pot.
- Heat over medium heat, stirring occasionally to ensure even heating.
- Once the soup reaches a gentle simmer, continue to heat for an additional 5-10 minutes.
- Taste and adjust seasoning if needed before serving.
For microwave reheating:
- Transfer a portion of the vegetable soup to a microwave-safe bowl.
- Cover the bowl with a microwave-safe lid or plastic wrap, leaving a small vent for steam to escape.
- Heat on high for 2-3 minutes, stirring halfway through to ensure even heating.
- If the soup is not hot enough, continue heating in 30-second intervals, stirring in between, until it reaches the desired temperature.
- Taste and adjust seasoning if needed before serving.
For slow cooker reheating:
- Pour the leftover vegetable soup back into the slow cooker.
- Set the slow cooker to low and cover with the lid.
- Heat for 1-2 hours, stirring occasionally to ensure even heating.
- Taste and adjust seasoning if needed before serving.
For oven reheating:
- Preheat the oven to 350°F (175°C).
- Transfer the vegetable soup to an oven-safe dish and cover with aluminum foil.
- Heat in the oven for 20-30 minutes, stirring halfway through to ensure even heating.
- Taste and adjust seasoning if needed before serving.
Essential Tools for Making Vegetable Soup in a Slow Cooker
Slow cooker: This is the primary appliance used to cook the vegetable soup slowly over several hours, allowing the flavors to meld together.
Cutting board: Essential for chopping all the vegetables like carrots, celery, onions, and potatoes.
Chef's knife: A sharp knife is crucial for efficiently and safely chopping all the vegetables.
Measuring cups: Used to measure the vegetable broth and ensure you have the correct amount of each ingredient.
Measuring spoons: Necessary for accurately measuring the dried thyme, dried basil, salt, and black pepper.
Can opener: Required to open the can of diced tomatoes.
Mixing spoon: Used to stir all the ingredients together in the slow cooker.
Garlic press: Handy for mincing the garlic cloves quickly and efficiently.
Ladle: Useful for serving the soup once it’s ready.
How to Save Time on Making This Soup
Pre-chop vegetables: Chop all carrots, celery, onion, and potatoes the night before and store them in airtight containers in the fridge.
Use pre-made broth: Opt for store-bought vegetable broth to save time on making your own.
Minced garlic in a jar: Use pre-minced garlic from a jar to avoid the hassle of peeling and chopping.
Diced tomatoes: Buy canned diced tomatoes to skip the step of chopping fresh ones.
Slow cooker liner: Use a slow cooker liner for easy cleanup after cooking.

Slow Cooker Vegetable Soup Recipe
Ingredients
Main Ingredients
- 4 cups Vegetable Broth
- 2 cups Chopped Carrots
- 2 cups Chopped Celery
- 1 cup Chopped Onion
- 2 cups Chopped Potatoes
- 1 can Diced Tomatoes (14.5 oz)
- 2 cloves Garlic minced
- 1 teaspoon Dried Thyme
- 1 teaspoon Dried Basil
- 1 teaspoon Salt to taste
- 0.5 teaspoon Black Pepper to taste
Instructions
- 1. Add all ingredients to the slow cooker.
- 2. Stir to combine.
- 3. Cover and cook on low for 6-8 hours or on high for 3-4 hours.
- 4. Taste and adjust seasoning if needed before serving.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Soup
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