The veteran midfielder, 37, came out of retirement in January to boost United's title hopes.
Although the Red Devils fell short of winning the crown, Scholes was a key figure in pushing champions Manchester City all the way.
United boss Alex Ferguson confirmed two weeks ago that Scholes would be staying on for an 18th season in United colours.
And the former England star sealed the paperwork on his new deal today along with young keeper Ben Amos.
The England Under-21 keeper has signed a three-year contract extension to keep him at the club until 2015.
