From Flight Unlimited by Eric Muller and Annette Carson - paraphrased.
Throttle closed - most important
Stick back and 'in' to the spin.
Opposite rudder.
When the rotation stops bring the stick central and neutral, recover, take pants to cleaners !
The Muller/Beggs recovery works for nearly all standard aeroplanes and spins and is let go of the stick and rudder, press fully on the rudder pedal that floats toward you, as the rotation stops, catch the stick as it moves from rear left or right to central.