Not sure about "ever" as it probably wasn't the most technically difficult pass he'll ever make, but Kev's pass to Leroy to set up up Raheem in the game against Stoke.
1 minute in.
Just about everybody in the stadium expected Kev to ping it towards goal, but the way it was perfectly disguised was a joy to watch. With one 15 yard pass, he took out 4 defenders. Simple, yet brilliant.