The owner of a Queens restaurant and 11 alleged gangbangers cooked up some off-the-menu specials — illicit drug deals, authorities said yesterday.

A probe dubbed Operation Dinner Out began in October 2010 after the NYPD heard someone was pushing drugs in La Braza, in Briarwood, Queens, DA Richard Brown said.

Arrested over the last two months were one Latin King, one Blood, one Crip and 10 Trinitarios — including restaurateur Brian Romero, 31.

Recovered were four firearms, more than a kilo of cocaine, 777 glassines of heroin, two ounces of pot and $3,520 from the since-closed eatery.

The 13 suspects face various charges, including criminal sale and possession of a controlled substance, criminal possession of a weapon and assault.