Depending on your dietary necessities, you might want to use different ingredients to make a cream sauce. The three variations produce very similar results, and with the chipotle peppers removed, the cream sauce bases are a blank canvas for many other sauces.
Add all of the ingredients, except for the roasted red peppers and the chipotle peppers, to an Instant Pot or electric pressure cooker*. Cook on high pressure for 4 minutes, and then quick release. (if you Carefully pour the contents of the instant pot into a blender, add the chipotle peppers, and blend until creamy. Add more liquid if it seems too thick. Season to taste. Make it punchy!
*If you do not have an electric pressure cooker, just place the ingredients into a pot and loosely cover with a lid. Bring to a simmer, and allow to cook for about 10 minutes, or until the cauliflower is very tender.