Vegan Roasted Broccoli and Lemon Soup

·
Do you want to eat AND live more colorfully?
Subscribe to my newsletter and explore how to live your most vibrant plant-filled life.

(Note: this post was originally published on April 21, 2019. It has since been updated with a few tweaks.)

A Vibrant Vegan Broccoli Soup For Spring

If you have spring on the mind but the weather is still chilly, then this vibrant broccoli lemon soup is for you. It's bursting with spring-appropriate freshness thanks to tart lemon and a beautiful swirl of bright green pesto, yet it's still comforting and warming. It's the perfect meal for those March or April days when we're all ready for spring to come but the weather isn't cooperating.

This vegan broccoli soup is easy to make too. Although the veggies take a little bit of time to roast, it's mostly hands-off. That means you can pull together a big batch effortlessly, making this a very weeknight-friendly soup. It's great for meal prep too; I like to make a big batch on a chilly March weekend so that we can have leftovers the next few evenings.

Ready to dive in? This broccoli lemon soup is not the heavy, cheesy, dairy-filled broccoli soup you're used to; you're going to love this fresh update.

Close-up of a bowl of vegan broccoli lemon soup, topped with a swirl of bright green pesto and pine nuts

Is Broccoli Soup Healthy?

Although broccoli is widely seen as a very nutritious ingredient, most broccoli soup recipes are decidedly unhealthy. They tend to involve large amounts of butter, cream, and/or cheese, making classic broccoli soup recipes very heavy, high in fat, and not friendly for plant-based eaters. If you don't believe me, take a look at the ingredients and nutrition facts for the iconic Panera Bread broccoli soup.

This broccoli soup without cream is different though. Instead of dairy, this version gets its creaminess from roasted and pureed cauliflower. It's a much lighter version of the classic in which veggies are the star of the show. The addition of lemon (both the zest and the juice) makes this soup feel fresh and vibrant.

How to Make Broccoli Soup Without Cream

This broccoli lemon soup is easy to make and has just a few steps. First, you'll roast broccoli, cauliflower, and onion at high heat to bring out all their flavors, adding lemon zest at the very end of the roasting time. You'll then puree the roasted veggies with broth, simmer the soup for a few minutes on the stove, and stir in lemon juice right before serving.

Process photograph of roasting broccoli, cauliflower, and onions on a large sheet tray

Broccoli Lemon Soup Variations

There are lots of ways you can change up this vegan broccoli soup to make it work for you. If you want an extra creamy soup, use full-fat coconut milk in place of some or all of the broth. You can also puree a can of white beans (drained and rinsed) into the soup for a creamier texture and great plant-based protein.

I like to serve this soup with a big swirl of pesto and pine nuts on top; they really add to the spring feel. You can garnish individual portions however you like though. Other tasty options include pistachios, homemade croutons, crispy chickpeas, and/or a sprinkle of your favorite cheese.

Make-Ahead Tips

This broccoli soup without cream works well as a make-ahead dish, so it's a great option for healthy meal prep. To prepare it in advance, make the whole recipe except for adding the lemon juice. Store the soup in a sealed container in the refrigerator, then reheat either all of it or just a single portion. Stir in the lemon juice and add any garnishes right before serving for the freshest flavor. It also freezes well, as long as it's in a sealed container.

Close-up of a bowl of vegan broccoli lemon soup, showing the rich texture even though this soup has no cream

Ingredients and Substitutions

Here's what you'll need for this healthy broccoli soup without cream, as well as some thoughts, tips, and possible substitutions. If you make any substitutions, I'd love to hear about it in the comments section below.

  • Head of broccoli
  • Head of cauliflower
  • Sweet onion
  • Olive oil
  • Salt and pepper
  • Lemons. You'll use both the zest and the juice for extra lemony flavor. Feel free to use one or two lemons as your preferences dictate.
  • Vegetable broth. You can also use coconut milk if you want to give some extra richness to this vegan broccoli soup.
  • Pesto. You'll garnish individual portions with a swirl of pesto, which adds a beautiful freshness to this soup. Make sure to check out my vegan oil-free pesto guide for pesto inspiration.
  • Pine nuts. For garnishing. You can also use pistachios.

Overhead view of a bowl of healthy vegan broccoli soup, shown with a spoon and a white napkin

Closing Thoughts

Doesn't this broccoli lemon soup seem like the perfect meal for a chilly early-spring day? I love that it's light and fresh, while still being comforting and warming. It's exactly the kind of dinner I crave when the March sunshine isn't as warm as it looks.

Because this soup is easy and versatile, it's one that can fit seamlessly into your dinner rotation. You can make it in advance (a meal prep win!) and even freeze portions for later. You can top it however you like. You can keep it on the lighter side, or make it feel extra cozy by using coconut milk and some heartier toppings. Regardless of how you choose to enjoy this soup, I'm confident it's one you'll want to keep coming back to again and again.

Close-up of a bowl of healthy broccoli lemon soup, topped with a swirl of bright green pesto, pine nuts, and freshly ground pepper

Share It!

It makes me so happy to hear from you and see your creations! Please leave a comment below and let me know what you think about this recipe. If you post a photo on Instagram, hashtag #TheRogueBrusselSprout and tag me (@TheRogueBrusselSprout) in the post text so that I'm sure to see it.

Suggested Pairings

Ginger Bee's Knees

Loaded Lemon Hummus

Spring Asparagus Salad with Raw and Grilled Greens

Nourishing Vegan Pasta Primavera with Lemon Tahini Sauce

Blueberry Lemon Tahini Oat Flour Bundt Cake

Vegan Roasted Broccoli and Lemon Soup

This cozy-yet-fresh vegan broccoli soup unites comforting roasted veggies with bright, vibrant lemon. It's the perfect meal for a chilly day in early spring.

Author:
Lee

Ingredients

For the Soup

  • Head of broccoli
  • Head of cauliflower
  • Sweet onion
  • Dash of olive oil
  • Generous salt and pepper
  • Zest of 1-2 lemons
  • 2-3 c vegetable broth
  • Juice of 1-2 lemons

For Garnishing

  • Pesto
  • Pine nuts
  • Freshly ground black pepper

Instructions

  1. Preheat the oven to 425 and oil a large sheet tray (or two smaller sheet trays).
  2. Cut the cauliflower and broccoli into florets and cut the onion into small wedges.
  3. Lay the veggies out across the prepared sheet tray, then add generous salt and pepper.
  4. Roast for about 30-40 minutes until caramelized and flavorful, tossing every ten minutes.
  5. Near the end of the roasting time, zest 1-2 lemons over the veggies. Put them back into the oven for two minutes.
  6. Place the roasted veggies and 2 c vegetable broth in a high-powered blender. Blend to create a rich, thick texture, adding more broth as needed. You may need to work in several batches.
  7. Pour the soup into a medium-sized pot over low heat. Keep it just below a simmer for 15 minutes to finish bringing the flavors together. Just before serving, stir in the juice of 1-2 lemons (to taste).
  8. To serve, ladle the soup into bowls and swirl the top with a generous dollop of pesto. Finish it with a sprinkle of pine nuts and freshly ground black pepper.

Leave a Comment

Please Share Your Thoughts!

Did you make this recipe? Did you make substitutions? How did you serve it? Any helpful tips? Please share your thoughts, since these insights are really useful to both me and to other readers.

Thanks for contributing to our community! Your comment will appear shortly.
Oops! Something went wrong while submitting the form.
Lee
March 27, 2023
Chelsea- Yes, this soup will work fine as a make-ahead option! Just make sure you cool it completely, then store it in the fridge for a day or two in a sealed container. You can reheat it in a pot or in the microwave, then garnish it right before serving.
Chelsea
March 26, 2023
Love this color. I’m party-planning. Would this work for make-ahead do you think?
Gina
April 21, 2022
So cozy on a cold April evening. We topped with pesto, EVOO, lemon zest, almonds, and parm. Yum!
Elise
April 29, 2019
I made this with artichoke hearts as the "creamy" element--added them from the can at the cuisinart stage. Garnished with parmigiano reggiano. Yum!