From the homily-stuffed script (“food is love,” “beautiful is a feeling”) to the relentlessly on-the-button soundtrack (please god, no more “Funiculì Funiculà”), “Nonnas” serves up ethnic comedy on a platter of ham and cheese.

Based on a true story, this four-grannies-and-a-funeral caper tosses finely aged ingredients — Susan Sarandon, Lorraine Bracco, Brenda Vaccaro, Talia Shire — into a slurry of Italian caricature and cliché. At its center sits Joe Scaravella (an oddly anemic Vince Vaughn), a Brooklyn transportation worker who, after his mother’s death, decides to honor her by opening a restaurant on Staten Island and hiring Italian grandmothers, or nonnas, as his chefs.