Combine all ingredients except the flour into the pot of the Ninja Foodi.
Place the additional lid on top and move nozzle to 'vent'.
Turn the slow cooker function to low for 8 hours and start.
Once the cooking time is over if using the slow cooker function, remove the lid and stir in the reserved flour.
Cover and cook for an additional 30 minutes to thicken.
To make this with the Pressure Cooker function - Put the lid on the Ninja Foodi and move the nozzle to 'seal', cook for 4 minutes on high pressure.Once cooked, release the steam and mix in the flour. Add the lid back to the Ninja Foodi and let it warm for 15 minutes to thicken.