Cut up cube steak into smaller pieces
Add some flour to a ziploc bag and add steak one at a time to coat
Turn on Saute mode on your instapot and add oil
Add steak cubes to instapot, browning all sides evenly
Set steaks aside and de-glaze bottom with about 3tbsp of the chicken broth
Cut onions into rings (or smaller if you prefer) and cook until tender
Remove steak again
Mix remaining broth, salt, and pepper together well then add the cube steak
Cook on Manuel High for 20mins then do a Quick Release of pressure until pin drops
Open lid and Turn the saute mode on, add milk and 1/2C flour and whisk for about 5 mins.
Serve over mashed potatoes..Or even rice if you want