Rinse the calamari tubes and cut them lengthwise, leaving the sides intact. Set aside.
In a large skillet, heat the olive oil over medium heat. Add the onion, celery, bell pepper, and garlic. Cook, stirring often, until the vegetables are softened, about 5 minutes.
Add the shrimp, scallops, parsley, white wine, breadcrumbs, oregano, salt, and pepper. Cook, stirring often, for 3 minutes.
Stuff each calamari tube with the seafood mixture. Secure with a toothpick, if desired.
Place the stuffed calamari in a large baking dish. Drizzle with olive oil and bake in a preheated 400°F oven for 20 minutes, or until the calamari is cooked through.
Serve the stuffed calamari with a side of your favorite vegetables or a salad.
Interesting Facts
Calamari is a type of squid.
Calamari is high in protein and low in fat.
Stuffed calamari is a popular dish in Mediterranean countries.
This dish can be served as an appetizer or as a main course.