And the funnyman, who has featured in The Young Ones and Bottom, joked he would be celebrating with beans on toast after weeks of perfecting his skills on complex dishes.
Edmondson, 56, beat fellow finalists Les Dennis and Janet Street-Porter to the title by cooking a faultless three-course meal of venison and sea bass for judges John Torode and Gregg Wallace.
Viewers have seen them battling through four weeks of heats and two weeks of semi-finals and finals. The finalists have been seen preparing afternoon tea at London's One Aldwych, recreating a tough recipe devised by show judge Torode, and preparing a full meal for Michelin-starred chefs.
Edmondson said: "I'm very chuffed, I've spent most of my life being second, so to come top it feels very weird. It feels unusual, but I'm very, very pleased indeed. It's quite nice to be first."
Torode said the winner's dishes were "delicious and absolutely mind-blowing".
Wallace said: "I love the look of his dishes."
Edmondson will be taking part in the BBC Good Food Show Scotland at the SECC in Glasgow from October 18 to 20.