Preheat the oven to 400 degrees F.
In a medium pot, bring 4 cups water to a boil over high heat. Place the quahogs in the pot and let them steam until they open, 5 to 6 minutes. Remove the quahogs and strain the water from the pot (which is now quahog broth) and reserve it for later use. Then remove the meats from the shells and, when cool, chop into chunky 1/4-inch pieces or use a food processor. (Don't over process, the meats should be chunky.) The shells can be set aside for later use. Make sure to remove any muscles left on the shells and discard any broken shells.
In a large skillet over medium-high heat, add the butter, chourico, onions and pepper relish and cook until the onions become translucent. Add the chopped quahog meat and cook for 3 to 4 minutes longer.
In a large mixing bowl, add the quahog broth to the croutons and fold together. When the croutons have absorbed the broth, add the hot ingredients to the bowl. Incorporate all of the ingredients, and adding enough plain breadcrumbs until the mixture is stiff. Divide the mixture into 10 even balls, about 5 ounces each or 3 inches in diameter, and place firmly into the shells. Place the shells on a sheet pan into the oven until the outside of the stuffie is toasted brown, 5 to 10 minutes. The stuffies are now ready to be served.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy M. Stephen Bucolo, Anthony's Seafood