The timer has dinged on a famed pastry chef’s marriage to a ­vegan baker — and now the former couple is fighting over a different kind of dough.

Fernanda Capobianco, owner of the Vegan Divas bakery on the Upper East Side, is suing her estranged husband, the French pastry chef Francois Payard, for a 50 percent share in their Hamptons summer home.

He filed for divorce in August, and they’re now living in different Manhattan apartments.

The James Beard Award-winning chef sold his interest in his namesake eateries — Francois Payard Bakery and FP Patisserie — around the same time.

While Payard bought the Long Island property for $375,000 in 2014, Capobianco says in a new Manhattan Supreme Court suit that she later paid him $100,000 toward the home and took care of its decoration, design and upkeep.

A prenup indicates the home is marital property, so Capobianco is demanding to be paid half of its value.

Capobianco’s attorney, Stuart Gartner, said his client sued to “protect her interests.”

“I fully expect there’s going to be an amicable settlement to this,” he said.

Payard and his lawyer did not return calls for comment.