Turn on the saute function of the Instant pot. Once the pot is preheated, add the bacon. Cook until crisp then remove to a platter and crumble.
Add sausage to drippings. Cook using saute function until most of the pink is gone, about 2-4 minutes. Use a meat chopper utensil or potato masher to break up the meat.
Stir in the onion and garlic and cook for 3 more minutes or until the onions have softened. Add the flour, Italian seasoning, salt and pepper. Stir until flour is fully incorporated.
Add the chicken stock and potatoes using a large spoon to scrape up any browned bits from the bottom of the pot. Hit ‘cancel’ to stop the saute function and place the lid on the pressure cooker, making sure the valve is set to sealing. Press the manual/high pressure setting and set the cook time for 5 minutes.
After the cooking cycle is complete, let the pressure release naturally for 10 minutes. Quick release any remaining pressure and remove the lid.
Turn the Instapot back on using the saute button and stir in the chopped kale. Let cook without the lid for 2 minutes. Stir in cream, continue to cook for 2 more minutes. Turn off the instant pot and serve.
Please note: At the end of cooking, you may thicken further using a cornstarch slurry. Equal parts cornstarch dissolved in cold water then whisked into the soup to thicken to your taste. Likewise, you can thin further by adding more chicken stock. Serve immediately topped with grated Parmesan cheese.
See Cook's note for stovetop instructions.