Step 1

Select the Sauté function on your Instant Pot. Set the level to medium and set the time to 8 minutes. When the Instant Pot is preheated, drizzle the oil into the pot and add the onion, celery, and carrots. Cook for the 8 minutes, or until the vegetables soften.

Step 2

Add the kale stems, garlic, tomatoes, lentils, vinegar, thyme bundle, salt, cumin and several grinds of pepper to the pot and stir. Pour in the vegetable broth and secure the lid on the Instant Pot. Pressure cook on high for 15 minutes.

Step 3

Allow the Instant Pot to release pressure naturally. This will take 20 to 30 minutes. When the float valve drops, remove the lid and stir in the kale leaves. Add a pinch of red pepper flakes and season to taste with salt and pepper.

Step 4

Remove the thyme bundle, and garnish with the parsley and grated Parmesan, if desired. Serve with crusty bread.