Gee started in Sunday's game against the Atlanta Braves.
The right-hander was 2-2 with a 2.18 ERA in five starts for the Mets in 2010. He was 1-1 with a 4.63 ERA in two starts for Buffalo this year.
The Mets needed another starting pitcher after placing right-hander Chris Young on the 15-day disabled list Saturday with right biceps tendinitis.
The Mets backdated Young's DL trip to Monday. He will be eligible to return for the April 26 opener against the Nationals in Washington.
On Saturday, Mets manager Terry Collins said Young will resume throwing this Tuesday after taking the weekend off to allow his biceps tendinitis to calm. The manager added that the team's medical staff is confident there is no more severe issue and therefore no immediate need exists for an MRI or other imaging test.
Misch, a left-hander, was recalled Saturday to bolster the team's bullpen for Saturday's doubleheader. He pitched two innings, giving up one run, in a 4-2 loss to the Braves in Saturday's first game.
Information from ESPNNewYork.com's Adam Rubin and The Associated Press was used in this report.