Turn the Ninja Foodi on high sear/sauté and melt the butter. Add onions, celery, and sweet peppers and seasonings. Sauté for 5 minutes.
Cut up the bread into cubes and dump into the inner pot. Broil for 5 minutes and then open the lid and toss around the bread. Continue to broil at 2-3 minute intervals, tossing the bread cubes after every 2-3 minutes until the bread is nicely toasted. This usually takes around 12-15 minutes.
Add 1 cup of chicken or turkey bone broth and toss the bread around to dampen the stuffing. You can add more liquid if you want it a little moister, but you don't want it to be wet. Taste for seasonings and add more if needed. This will all depend on how flavorful your broth is.
Butter the pan you are using and transfer the bread mixture to the pan. Add 1 cup of broth to the inner pot. Set on the rack in the low position and place the rack in the inner pot. Put the pressure lid on and turn the valve to seal. Set the Ninja Foodi to high pressure for 5 minutes, immediately release the pressure when the time is up.
Check your stuffing and if it isn't as moist as you would like it, add some more broth. Lower the TenderCrisp lid and select broil for 5 minutes or until it is done to your liking.
when choosing a broth for your stuffing, make it as flavorful as you can by either making it yourself at home or using bone broth instead of stock. If you are using stock, you may need to season your stuffing with more than what this recipe calls for because the broth I used was seasoned already.