Select the Saute function on your instant pot. Once hot, cover bottom of pot with oil of choice. Add chopped onion and saute for 2 to 3 minutes. Then add in garlic and sausage. Brown the sausage until cooked (about 5 minutes). Select Cancel on your instant pot.
Pour chicken broth over the sausage, and add in potatoes and herbs.
Secure the lid. Cook on high pressure for 12 minutes. Use a quick release. Remove the lid and select saute function.
Add kale (I doubled the amount I added but listed recipe as written) and stir a few minutes until kale begins to wilt. Add in coconut milk or heavy cream.
Season with crushed red pepper, salt, and pepper to taste.