Mixed Vegetable Soup Recipe

Prepare broth

In a large soup pot, combine 8 cups vegetable broth and 1 cup water. Add 2 bay leaves and 1 tablespoon fresh thyme (or 1 tsp dried). Bring to a gentle simmer over medium heat while you prepare the vegetables.

When adding salt and pepper, start with 1 1/2 tsp salt and 1 tsp freshly ground black pepper. You will adjust seasoning near the end. Add 1/4 tsp red pepper flakes now if using for a touch of heat.

Cook aromatics

Heat 2 tablespoons olive oil in a large heavy-bottomed pot over medium heat. Add the diced onion (1 cup), diced carrots (1 cup) and diced celery (3/4 cup). Sauté, stirring occasionally, until the onion is translucent and the carrots begin to soften, about 6–8 minutes.

Add 3 minced garlic cloves and cook 30–45 seconds until fragrant, stirring constantly to avoid burning.

Pour the simmering broth from the other pot into the pot with the aromatics (or move aromatics into the broth pot). Stir to combine and bring back to a gentle simmer.

Add heartier vegetables

Add the diced potatoes (2 cups) and green beans (1 cup) to the simmering soup. Continue simmering gently, uncovered, for 12–15 minutes, until potatoes are nearly tender when pierced with a fork.

Stir in the zucchini (1 cup), frozen peas (1/2 cup), corn (1/2 cup) and diced tomatoes with their juices (1 cup). Simmer another 6–8 minutes until all vegetables are tender but not mushy.

Add the chopped leafy greens (2 cups) during the last 2 minutes of cooking so they wilt but remain bright. Remove and discard the bay leaves.

Adjust seasoning and finish

Taste the soup and adjust seasoning: add more salt or pepper if needed. Stir in 1 tablespoon fresh lemon juice and 1/4 cup chopped fresh parsley. If desired, sprinkle 1/4 cup grated Parmesan into individual bowls or directly into the pot for a richer finish (omit for vegan).

Ladle soup into bowls and serve hot. The soup keeps well refrigerated for 3–4 days and can be frozen for up to 2 months. Reheat gently on the stove, adding a splash of broth or water if it’s too thick.