In the Instant Pot, add all ingredients from vegetable through to bay leaf.
Place lid on the Instant Pot and set valve to seal position. Set to manual for 25 minutes. Let natural release for 10 minutes, then quick release. Remove the lid.
While the soup is cooking in the Instant Pot, make a roux by melting the butter a small saucepan over medium-high on the stovetop.
Whisk flour into butter, whisking until a thick roux, usually only about 10-30 seconds. Slowly add plant-based milk, whisking to combine and until it comes to a slow boil and milk-base thickens, about 2-3 minutes.
Once you have removed the lid of the Instant Pot, set to sauté, add Kale and cook 1 minute or until Kale wilts. Add thickened milk-base to soup. Stir and simmer to thickened about another minute. Turn instant pot off. Remove the bay leaf.
Add salt and pepper to taste
Serve and Enjoy!