Without the lid on, PRESS the SAUTE mode button on the Instant Pot. When HOT appears on the display, add butter.
Add bell peppers and onions and cook until softened. serve.
Add sliced kielbasa and cook until lightly browned.
Turn off the SAUTE setting and add the cauliflower rice to the pot and stir until ingredients are combined.
Add paprika, onion powder, garlic powder, salt, black pepper, cayenne pepper, and thyme.
Add broth and stir again to evenly distribute seasonings.
Close and lock the lid, and set the floating valve on the SEALING. Cook on MANUAL for 5 minutes.
When finished, do a 10-minute NATURAL RELEASE. Then turn the steam floating valve on the lid to the VENTING position to release the remaining pressure manually. Carefully open lid.
Fluff the cauliflower rice with a fork and serve hot.