Roasted Broccoli Soup with Lemon Tahini Cream

This roasted broccoli soup is jam packed with veggies and bursting with flavor. We roast the broccoli to bring out its sweetness and then serve it with a tangy lemon tahini cream. It’s easy to make, completely dairy-free, and it’s ready in an hour!

Roasted broccoli soup isn’t your average broccoli soup—it’s honestly the only way I want to eat it. Roasting the broccoli might feel like an extra step, but it’s what makes this soup so special. The broccoli turns sweet and nutty in the oven, the onion caramelizes, and the flavor you get from that roasting step carries through the entire soup.

I often double up on the roasting and throw extra vegetables on a sheet pan while I’m at it, so I can use them in salads or grain bowls later in the week. Once everything is roasted, it is blended with garlic, lemon, stock, potatoes, spices, and a large handful of spinach for color and depth. The potatoes make the soup naturally creamy without needing any dairy, and the roasted lemon brightens everything up beautifully.

This is the soup I reach for on cold days when I want something cozy and deeply flavorful. It freezes really well, too, which means I can stash a few portions away and enjoy it for weeks to come—always happy when I find some waiting for me in the freezer.

Store leftovers and freeze

How long does it keep in the refrigerator? Store the soup in a sealed jar or container in the fridge for 3-4 days.

Can I freeze it? Absolutely! This soup freezes beautifully. Store it in a freezer-proof container or reusable silicone bag (I like these Stasher ones) for up to 3 months!

Tap stars to rate!

4.95 stars (36 ratings)

Roasted Broccoli Soup Recipe

Prep: 20 minutes mins

Cook: 40 minutes mins

Total: 1 hour hr

Rate Recipe Print

• Pin

SaveSaved!

Add us as a preferred source

This roasted broccoli soup is jam-packed with veggies and bursting with flavor. We roast the broccoli to bring out its sweetness and then serve it with a tangy lemon tahini cream. It's easy to make, completely dairy-free, and it's ready in an hour!

4

Ingredients

• ▢ 2 lb broccoli (stems and florets chopped – see notes)
• ▢ 1 tablespoon olive oil
• ▢ 2 teaspoons sea salt (divided)
• ▢ 1 medium onion (sliced)
• ▢ 1 lemon (sliced)
• ▢ 6 cups stock (See notes)
• ▢ 4 cloves garlic (peeled and smashed with the side of your knife)
• ▢ 2 small russet potatoes (cut into cubes)
• ▢ 1-2 teaspoons Aleppo pepper (depending on spice preference – or sub a pinch of cayenne)
• ▢ ½ teaspoon cumin
• ▢ 2 cups spinach

Lemon Tahini Cream

• ▢ 2 tablespoons tahini
• ▢ 2 tablespoons lemon juice
• ▢ 1 small garlic clove (finely minced)
• ▢ ¼ teaspoon sea salt
• ▢ 1 pinch cayenne
• ▢ 1-2 tablespoons water (to thin)
• ▢ Reserved broccoli florets, lemon slices, and Aleppo pepper (to serve)

Instructions 

• Preheat your oven to 400 degrees Fahrenheit. Toss the broccoli with the oil and 1 teaspoon of salt and spread it out in a single layer on a baking sheet.
  2 lb broccoli, 1 tablespoon olive oil
  
• After 20 minutes, add the onion and lemon slices to the baking sheet. Return the pan to the oven for another 20 minutes, or until the broccoli is starting to brown in spots. Remove it from the oven and set aside a few small pieces of broccoli (for garnish) and the lemon slices.
  1 medium onion, 1 lemon
  
• While the broccoli is roasting, make the rest of the soup. Prepare the tahini lemon cream by whisking the ingredients together in a small bowl.
  2 tablespoons tahini, 2 tablespoons lemon juice, 1 small garlic clove, ¼ teaspoon sea salt, 1 pinch cayenne, 1-2 tablespoons water
  
• Put the stock, garlic, potatoes, Aleppo pepper, cumin, and the remaining teaspoon of salt into a soup pot and bring it to a boil. Reduce the heat to low, cover the pot, and simmer until the broccoli is done. When the broccoli and onions are cooked, add them to the pot and simmer until the potatoes are soft.
  6 cups stock, 4 cloves garlic, 2 small russet potatoes, 1-2 teaspoons Aleppo pepper, ½ teaspoon cumin
  
• Working in batches, carefully transfer the soup to a blender, add the spinach, blend on high until smooth, and then return the soup to the pot. Squeeze the juice from the roasted lemon slices into the soup and stir.
  2 cups spinach
  
• Serve the soup with any or all of the toppings and the tahini cream drizzled over top.
  Reserved broccoli florets, lemon slices, and Aleppo pepper
  

Video

Notes

Broccoli stems: There is no need to throw out the broccoli stems … they’re the sweet part! Simply chop them up and add with to the pan with the florets.

Stock: I like to use my homemade bone broth or chicken stock in this recipe. It adds a lot of depth to the soup. If you have only vegetable or store-bought stock, you’ll likely need to add quite a bit more salt.

Thank you, Marina, for your comment about adding spinach to the soup. I loved it so much that I decided to add it to the recipe!

Nutrition

Serving: 1 serving = ¼ of the recipe, Calories: 271kcal (14%), Carbohydrates: 45g (15%), Protein: 11g (22%), Fat: 9g (14%), Saturated Fat: 1g (6%), Polyunsaturated Fat: 2g, Monounsaturated Fat: 4g, Sodium: 1649mg (72%), Potassium: 1239mg (35%), Fiber: 9g (38%), Sugar: 10g (11%), Vitamin A: 2339IU (47%), Vitamin C: 230mg (279%), Calcium: 156mg (16%), Iron: 3mg (17%)

© Author Kristen Stevens

We have thoroughly tested this recipe for accuracy. However, individual results may vary. See our full recipe disclosure here.

More cozy soup recipes

30 minutes mins

Cozy Celery Soup

1 hour hr 50 minutes mins

Roasted Eggplant Soup with Crispy Chickpea Croutons

55 minutes mins

Roasted Garlic Soup – Rich and Creamy

30 minutes mins

Tomato Cheddar Soup

All soup recipes