A 1-0 win over St Gallen earned FCB their eighth title since the turn of the millennium, much to the delight of boss Murat Yakin, who took charge back in October
Raul Bobadilla struck the only goal of the game to seal all three points for the hosts, meaning Grasshopper's 4-1 thrashing of Lausanne counted for little as Basel finished three points clear at the top of the table.
"What can I say? It's fantastic. I'm so pleased for everyone," coach Murat Yakin told reporters after the match.
Yakin replaced Heiko Vogel in October with the side 12 points off the pace in the league, and chairman Bernhard Heusler believes Sunday's success proved that the right decision was made in the Autumn.
"It's been a difficult year, one in which we've had to really stick together. At the end of it all, it's clear that we made the right decision," he was quoted as saying by Uefa's official website.
The title marks a positive end to a mixed campaign for Basel. They reached their first ever European semi-final when they took on eventual winners Chelsea in the Europa League last four, but suffered an agonising penalty defeat to rivals Grasshoppers in the Swiss Cup final having twice hit the woodwork in the match.