Step 1

Preheat oven to 400F (200C). Spray a large baking sheet with cooking spray.

Step 2

Spread the onions and carrot on prepared baking sheet. Season with salt and pepper.

Step 3

Roast in the preheated oven for 30 to 35 minutes until vegetables are very soft and browned at the edges.

Step 4

Cool the vegetables at least 15 minutes (if using a high speed blender, no need to cool). Place the vegetables, beans and 2 cups (500 mL) water in a blender. Process on high until completley smooth and silky.

Step 5

Transfer soup to a large saucepan. Whisk in an additional 1 and 1/2 cups water. Cook the soup over medium heat for 3 to 5 minutes until warmed through. Add more water, as desired, and season to taste with additional salt and pepper.