Combine the flour, salt, thyme, and pepper into a medium size container or bag. Cut up the beef into 1-1½" cubes and toss ½ of the beef cubes in the flour mixture. Reserve the remaining flour.
Add the olive oil to the inner pot of the Ninja Foodi and turn the sear/saute on high. When the oil is very hot, add the floured and unfloured beef cubes and brown them on all sides. This takes about 10 minutes or so.
Mince the garlic and cut one onion into large chunks and add them to the pot.
Deglaze the pot with the wine and scrape the bottom with a non-stick-safe utensil to remove the browned bits (fond) from the bottom of the pot. The wine will thicken.
Add in 2 cups of the beef broth (reserve ½ cup for later) and the Worcestershire sauce to the inner pot. Stir well. Put the pressure lid on and turn the black valve to seal. Pressure cook on high for 20 minutes. When the time is up, immediately release the pressure
