Pesto Vegetable Soup (Crock Pot)

The aroma of simmering vegetables mingled with the bright, herbaceous scent of basil pesto…it instantly transports me back to my Nonna’s kitchen. She always had a pot of something delicious bubbling away on the stove, ready to nourish and comfort. This Pesto Vegetable Soup, slowly simmered in a crock pot, captures that same feeling of warmth and wholesome goodness, a simple yet satisfying way to bring the flavors of the garden to the table, just like Nonna used to do.

Recipe Overview

• Prep Time: 20 minutes
• Cook Time: 6 hours 30 minutes
• Total Time: 6 hours 50 minutes
• Servings: 8-10
• Yield: About 3 quarts
• Dietary Type: Vegetarian (can be made vegan)

Ingredients

• 2 (14 ounce) cans seasoned chicken broth with roasted garlic (or vegetable broth for vegan)
• 1 cup onion, chopped
• 1 (10 ounce) package frozen peas (can be fresh)
• 9 ounces frozen cut green beans (can be fresh)
• 1 large zucchini, chopped
• 1 (28 ounce) can tomatoes (cut up or chopped)
• 2 (15 ounce) cans cannellini beans, drained and rinsed
• 1 teaspoon pepper
• 2 tablespoons pesto sauce (or 2 frozen pesto ice cubes)
• 1 (6 ounce) bag fresh Baby Spinach
• Grated parmesan cheese, for serving (optional)
• Additional pesto sauce, for serving (optional)
• Carrot, cut into disks (optional)
• Potato, cut into cubes (optional)
• Celery, chopped (optional)

Equipment Needed

• 5-6 quart slow cooker (crock pot)
• Chopping board
• Knife
• Can opener
• Measuring cups and spoons

Instructions

1. Pour the two cans of seasoned chicken broth (or vegetable broth) into your 5-6 quart crock pot.
2. Add the 1 cup of chopped onion to the crock pot.
3. Pour in the 10-ounce package of frozen peas (or fresh peas if using).
4. Add the 9 ounces of frozen cut green beans (or fresh green beans if using).
5. Add the chopped zucchini.
6. Pour in the 28-ounce can of tomatoes, ensuring they are either cut up or already chopped.
7. Add the two 15-ounce cans of cannellini beans, making sure they are drained and rinsed before adding them to the pot. This removes excess sodium and any starchy residue.
8. Sprinkle 1 teaspoon of pepper over the ingredients in the crock pot.
9. If you’re adding optional vegetables (as per the original recipe and my own preference), now is the time to toss in the carrot disks, potato cubes, and chopped celery.
10. Cover the crock pot and cook on low for 6 hours. The long, slow cooking time allows the flavors to meld together beautifully.
11. After 6 hours, carefully remove the lid and stir in 2 tablespoons of pesto sauce (or 2 frozen pesto ice cubes).
12. Add the 6-ounce bag of fresh Baby Spinach.
13. Cover the crock pot again and cook on low for an additional 30 minutes, or until the spinach is wilted and the pesto is fully incorporated.
14. Serve hot with grated parmesan cheese (optional) and a dollop of additional pesto sauce (optional) for an extra burst of flavor.

Expert Tips & Tricks

• Pesto Perfection: For the most vibrant flavor, use freshly made pesto. If using store-bought, choose a high-quality brand. Freezing pesto in ice cube trays is a fantastic way to preserve its freshness.
• Vegetable Variety: Feel free to customize the vegetables to your liking. Other great additions include chopped bell peppers, corn, or even leftover cooked vegetables.
• Broth Boost: Using a good quality broth is key to a flavorful soup. If you have homemade broth, even better!
• Bean Bonus: If you don’t have cannellini beans on hand, other types of beans like kidney beans or great northern beans will work well.
• Thickening it Up: If you prefer a thicker soup, you can mash some of the cannellini beans with a fork before adding them to the crock pot.

Serving & Storage Suggestions

This Pesto Vegetable Soup is delicious served hot with a sprinkle of grated parmesan cheese and a swirl of extra pesto. A side of crusty bread is perfect for soaking up all the flavorful broth. Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. For longer storage, freeze the soup in individual portions for up to 2-3 months. To reheat, simply warm the soup on the stovetop or in the microwave until heated through. If frozen, thaw the soup in the refrigerator overnight before reheating.

Nutritional Information

Note: Nutritional information is an estimate and may vary based on specific ingredients and portion sizes.

Nutrient	Amount per Serving	% Daily Value
Calories	168 kcal	8%
Total Fat	11g	14%
Saturated Fat	3g	2%
Cholesterol	0mg	0%
Sodium	380mg	16%
Total Carbohydrate	31g	11%
Dietary Fiber	11g	44%
Sugars	9g	18%
Protein	10g	20%

Variations & Substitutions

• Vegan Option: Use vegetable broth instead of chicken broth and omit the parmesan cheese.
• Gluten-Free: This recipe is naturally gluten-free.
• Spicy Kick: Add a pinch of red pepper flakes to the crock pot for a little heat.
• Creamy Version: Stir in a swirl of heavy cream or coconut milk at the end for a richer, creamier soup.
• Lemon Zest: A touch of lemon zest brightens the flavors and adds a refreshing twist.
• Protein Boost: Add cooked chicken, sausage, or tofu to the soup during the last 30 minutes of cooking for a heartier meal.
• Seasonal Veggies: Swap out veggies based on the season. Butternut squash in the fall, asparagus in the spring—the possibilities are endless!

FAQs (Frequently Asked Questions)

Q: Can I use dried beans instead of canned?
A: Yes, you can use dried beans, but you’ll need to soak them overnight and cook them separately before adding them to the crock pot. This will ensure they are tender and fully cooked.

Q: Can I make this soup on the stovetop?
A: Absolutely! Simply combine all the ingredients in a large pot and simmer over low heat for about 30-40 minutes, or until the vegetables are tender.

Q: How long does pesto last in the freezer?
A: Pesto can be stored in the freezer for up to 3 months. Make sure to use an airtight container or freezer bag to prevent freezer burn.

Q: Can I add pasta to this soup?
A: Yes, you can add small pasta shapes like ditalini or elbow macaroni during the last 30 minutes of cooking. Just be sure to adjust the amount of broth if needed, as the pasta will absorb some of the liquid.

Q: Can I use a different type of pesto?
A: While basil pesto is the most traditional choice, you can experiment with other types of pesto, such as sun-dried tomato pesto or kale pesto, for a different flavor profile.

Final Thoughts

I hope you’re inspired to try this simple yet flavorful Pesto Vegetable Soup! Its ease of preparation and adaptability make it a perfect weeknight meal, and the slow cooker infuses every spoonful with comforting flavors. Don’t hesitate to make it your own by adding your favorite vegetables or protein. I can’t wait to hear what variations you come up with. Please share your feedback in the comments below, and enjoy this taste of warmth and goodness! Perhaps pair it with a crisp, chilled glass of Pinot Grigio and some homemade focaccia. Buon appetito!