3 things to spin the ball

1. Clean club with sharp edges
2. A ball with a softer cover
3. A firm surface to hit off, it is hard to spin a ball out of the rough.

Use a lofted club like a 56 or a 60 degree wedge. Play the ball very close to the back foot with the club face slightly open. Have your weight on the front foot. Take the club back slowly and steeply and accelerate into the ball with a very low short finish. This will put spin on the ball not allowing it to run out. This is more of a high risk shot so should be practiced frequently before trying in a round.