Step 1

Preheat your oven to 400 degrees.

Step 2

Prepare the cauliflower and asparagus: chop bottoms off the asparagus stalks and discard, slice the remaining stalks into 2 inch long spears. Chop the cauliflower into florets. Spread cauliflower and asparagus onto a large baking sheet and drizzle with 1 tbsp olive oil. Salt and pepper. Place inside the oven to roast for approximately 25 mins, gently turning the vegetables halfway through.

Step 3

Meanwhile, heat up a large soup pot to medium heat. Add 2 tbsp olive oil, chopped onion, sliced mushrooms, and garlic. Sauté vegetables for 8-10 minutes, or until flagrant.

Step 4

Add asparagus and cauliflower to soup pot. Cover with broth and bring to a boil. Reduce heat to low and simmer for about 10 minutes.

Step 5

Add lemon juice, zest, and basil leaves. Using an immersion blender, puree until smooth. Alternatively, cool down the soup a bit, and pour into a large blender or food processor to puree.

Step 6

Serve immediately and garnish with any of the following optional toppings.

Step 7

Optional toppings: Parmesan cheese, lemon pepper, pesto, or even pancetta.