Roasted Cauliflower & Celery Soup

Happy carbs make for happy people! Wouldn’t you agree?

In a word association game – my first response to soup would be hot and I mean scalding hot. That’s just what soup has always meant to me – a winter meal to help soothe throats and build an appetite for the meal to follow. But now, as a grown up (almost!), soup is often THE MEAL, irrespective of the season. This roasted cauliflower soup is one such recipe that fits the bill.

Cauliflower – from sabzi to soup

One vegetable that is extremely diverse is the humble white cauliflower. In Indian cooking it is cooked as fritters that we call pakoras – spicy, hot snacks perfect for rainy days; or as one of the courses in a meal – often cooked with potatoes or assorted mixed vegetables or as the quintessential Punjabi breakfast/brunch bread, a stuffed Gobhi ka Paratha. Making a soup with cauliflower seemed like an obvious step to expand my repertoire. And the internet helped validate my thoughts! This is why kitchenpostcards as a blog exists – to share our experiences of cooking and to give back to the community of food bloggers helping homecooks across the globe.

So here goes, cauliflower soup – tasty, cold and hot.

Prep time ~ 45 minutes Inactive: 15 minutes, Active: 20-30 minutes

Ingredients for roasted cauliflower soup: 

Part 1: Roasting the cauliflower 

• One medium-sized cauliflower crown
• Cumin powder 1 tsp
• Salt, pepper and red chili powder – 1 tsp each (replace chili with paprika for a less spice)
• Olive oil 2 tbsp
• OPTIONAL Spices-  1/2 tsp each of garlic and ginger powder.

Part  2:  Cooking the soup

• Olive oil 1 tbsp
• One medium-sized cooking onion (I used yellow, red would be fine too),
• Celery sticks 2-3, chopped
• Low sodium chicken broth 2 cups(replace with vegetable stock for vegetarian option),
• Salt and pepper to taste (if needed),
• Cilantro 3-4 sprigs
• Cashew for garnishing 10-12 pieces
• Grated Cheese ~ 1/3 cup of parmesan/cheddar – optional
• More cashews for the soup – optional

See note for adjustments.

Let’s make Cauliflower Soup: 

This soup recipe can be broken down into two parts. One for roasting cauliflower and the next to cook everything together in a pot for the final soup. Steps below correspond with sections in the ingredients list.

Part 1 Roasting cauliflower: 

First, preheat oven to 400 F. Then, wash and clean one medium-sized cauliflower head. Pat it dry and cut it into even sized pieces. You’ll get mini-florets.

Transfer to a large bowl and sprinkle cumin powder, red chilli powder and salt and pepper. If you are keen on adding more spices – use ginger and garlic powder. These will add a layer of flavor. Then drizzle 2 tablespoons of olive oil and mix well. You can use your hands, tongs, salad spoons or cover the bowl with a plate and shake it well. Let this sit while you finish prepping remainder of the ingredients.

Once the oven is ready transfer marinated cauliflower to a baking tray that has been coated with a bit of oil to prevent sticking. I often use my cast iron pizza plate as a baking dish replacement. Bake at 400 F for 10-15 minutes. Turn half way through and check for color. Once cauliflower starts browning, turn off the oven and remove.

For the soup: 

Take 2-3 medium-sized celery sticks and wash them. Then cube them discarding the ends.
Slice 1 medium-sized onion. Based on your preference you could use red or sweet vidalia onion for this soup. Both will be sweet once caramelized – vidalia probably sweeter than red.

Next, put a deep pot on the stove and heat it on medium high. Add 1 tbsp of olive oil (or any of oil of your choice). Add onions and saute them until translucent and beginning to brown. Throw in celery and cook for a few minutes until you can smell the celery and it starts sweating. Finally, transfer roasted cauliflower that has been resting all this while.

Cook this mix for a few minutes and then add 2 cups of low sodium chicken broth. Bring to a boil. Turn off the heat.
All we need to do next is to blend and the soup will be ready to serve. If you have an immersion blender then use it to blend or cool until lukewarm and transfer to the processor jar and puree it.

Since both the broth and cauliflower already have salt, I tend to wait until the end to adjust salt and pepper. After blending the soup, simmer it one last time before serving if doing so warm. Or serve at room temperature or cool. Garnish with fresh coriander (cilantro) leaves and a few pieces of cashew nuts.
Enjoy!

Note: Cashew nuts can also be used as a part of the soup. You can roast and blend about a 1/4 cup along with cauliflower and celery. Additionally, if you do not like a very thick soup – use stock (chicken/vegetable) or milk to adjust for consistency. Make it creamier still with cheese! You could either add cheese while simmering soup before serving or add grated cheese as a garnish on each helping.

Print Recipe

Roasted Cauliflower and Celery Soup

Soups aren't for the first course anymore they are a full meal. Make this roasted cauliflower and celery soup for soup season!

Prep Time15 minutes mins

Cook Time30 minutes mins

Total Time45 minutes mins

Course: entree, Soup

Cuisine: American

Keyword: cauliflower soup, celery, gluten free, soup

Servings: 4

Author: Kanika Samra

Equipment

• Immersion blender or food processor

Ingredients

For roasting Cauliflower

• 1 Cauliflower head medium sized
• 1 tsp Cumin powder
• 1 tsp Red chilli or paprika
• Salt and Pepper to taste
• 2 tbsp Olive Oil
• 1/2 tsp Garlic powder optional
• 1/2 tsp Ginger powder optional

Cooking the Soup

• 1 tbsp Olive Oil
• 1 Onion medium or small, red or yellow
• 2-3 Celery stalks trimmed and chopped
• 2 cups Chicken Broth low sodium, or replace with vegetable stock
• Salt and pepper to taste if needed
• 3-4 sprigs Cilantro/fresh coriander for garnish, optional
• 10-12 pieces Cashews for garnish
• 1/3 cup Cheese – parmesan or cheddar grated, optional
• 1/4 cup Cashews for the soup, optional

Instructions

For roasting the Cauliflower

• Preheat oven to 400 F. Then, wash and clean one medium-sized cauliflower head. Pat it dry and cut it into even sized pieces.
• Transfer to a large bowl and sprinkle cumin powder, red chilli powder and salt and pepper. Could also add ginger and garlic powder. Drizzle 2 tablespoons of olive oil and mix well. Marinate while you finish prepping remainder of the ingredients.
• Take 2-3 medium-sized celery sticks and wash them. Then cube them discarding the ends. Slice 1 medium-sized onion. You could use red or sweet vidalia onion for this soup. Both will be sweet once caramelized – vidalia probably sweeter than red.
• Once the oven is ready transfer marinated cauliflower to a baking tray that has been coated with a bit of oil. Bake at 400 F for 10-15 minutes. Turn half way through and check for color. Once cauliflower starts browning, turn off the oven and remove.

For the soup:

• Put a deep pot on the stove and heat it on medium high. Add 1 tbsp of olive oil. Add onions and saute them until translucent and beginning to brown. Throw in celery and cook for a few minutes until you can smell the celery and it starts sweating. Finally, transfer roasted cauliflower that has been resting all this while.
• Cook this mix for a few minutes and then add 2 cups of low sodium chicken broth. Bring to a boil. Turn off the heat.
• Next, blend everything and the soup will be ready to serve. If you have an immersion blender, use it or cool until lukewarm and transfer to the processor jar and puree it.
• Since both the broth and cauliflower already have salt, I tend to wait until the end to adjust salt and pepper. After blending the soup, simmer it one last time before serving if doing so warm. Or serve at room temperature or cool.
• Garnish with fresh coriander (cilantro) leaves and a few pieces of cashew nuts (see note for using more cashews in soup and cheese). You could either add cheese while simmering soup before serving or add grated cheese as a garnish on each helping.

Notes

Cashew nuts can also be used as a part of the soup. You can roast and blend about a 1/4 cup along with cauliflower and celery.

For a richer, creamier soup add grated cheese. You could use a hard cheese such as parmesan or aged cheddar. Try the cheese before you add it to the soup to be sure of its taste! Simmer the soup with cheese just before serving. 

Additionally, if you do not like a very thick soup – use stock (chicken/vegetable) or milk to adjust for consistency.

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