Berardi impressed again for Sassuolo in the 2021-2022 season, scoring 15 times in Serie A – the third consecutive campaign the forward has posted double figures in the league.
He also recorded the most assists in the Italian top flight (14) and was the only Serie A forward to manage double figures for both goals and assists.
The 28 year-old has been at Sassuolo his entire career, but there had been suggestions recently that he could be tempted by a new challenge.
He was linked to Juventus, which co-owned him between 2013 and 2015, while Liverpool and Milan were also among those reportedly interested in the Italy international.
However, it was announced on Thursday (AEST) that he had pledged his future to the club for a further five years.
Berardi was in the headlines for the wrong reasons last week after he was involved in a heated spat with a Modena fan.
Sassuolo was eliminated from the Coppa Italia by its Serie B host at Stadio Alberto Braglia, with its loss followed by Berardi apparently chasing an opposing supporter outside the ground.
The footage went viral, but Berardi took to social media to offer an explanation, suggesting his family had been targeted off the pitch to spark his ire.