How much do you want to pay for this?
A professional tax preparer's software can efile 2010, 2011 and 2012 (the IRS allows the current year and the 2 prior years now). But they will charge you for this ability.
I'd got to IRS.GOV, forms, prior year, fill in the 1040EZ, print it, sign it, make a copy and hand deliver it to an IRS Taxpayer Assistance Center. They will stamp both the original and the copy with their date stamp and FAFSA *might* accept the copy if it's date stamped.