A “stall” in terms of aircraft means “loss of lift”; it has nothing to do with the engines stopping. Obviously, having the engines stop can also lead to a stall.
All kinds of bad things can happen to a plane whose pilot makes an incorrect turn. If the turn was attempted without enough banking, then a flat spin loss of control can result. If a tight turn with banking is attempted too near the ground then the wing tip can contact earth, trees or structures and catapult the plane into the ground. This is technically and dryly known as “controlled flight into terrain”.
If the pilot with sufficient altitude attempts to bank the plane at 90° while turning, the most extreme bank that he can make, then if he doesn’t have enough airspeed as he attempts the turn, the plane will start to drop sideways. It will do that anyway, of course, but if he does it without enough speed then he’s starting the stall in an awkward attitude, and he will have to level the plane at some point to regain forward airspeed and flight control.
If he’s attempting to simultaneously climb steeply and turn, then his banking maneuver can introduce a stall if his climb was already at the edge of what is possible for his aircraft as configured and loaded.
“Recovery from the stall” depends on the pilot’s knowledge of his actual condition (sometimes pilots in fog or cloud don’t even realize that they’re not flying straight and level, for example, and won’t even attempt the correct rescue maneuvers – because they don’t realize that they need to!), and the capability of the aircraft.