John Mathias, co-owner with his wife Maura Mathias, said the restaurant's chefs are creating "adult" versions of the familiar grilled cheese sandwiches, dinner sandwiches and dessert sandwiches, and pairing it with a flight of wine.
"It's just something to have some fun with in the winter months," John said.
He said the crowd favorite grilled cheese is poached lobster, pancetta and provolone. His favorite, also a popular one at Pesciolino Osteria, is the short rib with Gorgonzola cheese and caramelized onions.
"The braised short rib just melts in your mouth," John said.
Other flavor combinations include prosciutto, basil and fresh mozzarella. Another combination is crab cake with smoked provolone and tomato.
Vegetarian options may include fresh Mozzarella, basic pesto and oven dried tomato; or grilled vegetables such as zucchini and eggplant, along with smoked provolone.
The reasoning behind the special menu is simply a great customer experience.
"We just want them to come in and enjoy themselves," John said,
Grilled cheese sandwiches are not the type of menu options patrons might expect because Pesciolino Osteria doesn't serve lunch and it doesn't have a kids menu.
The breads aren't standard grilled cheese breads, but possibly brioche or focaccia. The cheeses used in these sandwiches are considered "higher end cheeses," he said.
"This isn't American cheese," John said. "We use goat cheese or smoked provolone."
The chefs are enjoying these opportunities for creativity and deviating from the menu, John said.
"It's a chance to reinvent ourselves," John said.
Sweet options might include nutella, marshmallows, graham cracker and brioche, which "tastes like French toast when grilled, John said.
"Or we might do one with banana nutella," John said. "We're just having fun with it. And we do a dessert flight with various ports.