The Bathgate-based businessman, who has twice won the World Scotch Pie Championship, beat a record field to take the fish pie category and the vegetarian division at the British Pie Championships.
Boyle, 52, of Boghall Butchers in Boghall, Bathgate, won the fish pie crown last year with the same pie a cod and white wine creation. Last year he had puff pastry on top, but this time he had to have a lid following a change in the rules.
That was the only alteration to the recipe for the pie, which he sells three times a week in his busy shop in the middle of a council housing estate.
Boyle, a former chef, said: "The veggie pie is a major seller over a big cross-section of customers, from workmen in boiler suits to housewives. The cod and white wine pie is also a good seller, but not as good as the veggie one. We're absolutely delighted with the double win.
"Last year, we upped our turnover and drew a lot of new customers to the shop with our success in the British Championships. We're expecting to do the same this time."
He added: "It's great to keep winning awards. I've won the World Scotch Pie Championship twice, once in 2009 and also in 2005, and I've also won three British titles in two years.
"Winning keeps the name of the shop in the headlines and brings new customers from all over. However, we're also proud to serve our regular customers, who have helped us grow the business to a position where we now have nine staff."
Other winners in the British Pie Awards included John Mettrick who took the title of Football Pie. He said: "I believe Liverpool, Everton and Newcastle were in the football pie class, and I think it will probably be the only time Glossop North End beats Premier League opposition at anything. Perhaps the club will change their nickname from the Hillmen to the Piemen!"