Onion Frittata with Roasted Tomato and Cheddar
The Italian version of an omelet, in which the whisked eggs and the other ingredients go into a large pan at the same time, a frittata can be eaten warm or cold. Almost any kind of vegetable works well in a frittata. We love the sweetness and flavor of leeks and roasted onions. The original sandwich at ’wichcraft contained only the frittata and good, aged Cheddar cheese. Ben Bohen, a long-time collaborator, would have this sandwich as his regular breakfast—except that Ben would always add roasted tomato. He encouraged the staff to try it, and he encouraged the customers to try it, until eventually he converted us all and we put it on the menu forevermore with Ben’s roasted tomatoes.
Recipe information
Yield
makes 4 sandwiches
Ingredients
Preparation
Step 1
Preheat the oven to 300°F.
Step 2
In a 10-inch ovenproof skillet, heat the oil and sauté the leek over low heat until soft but without color. In a large bowl, crack and whip the eggs and add the cream, Parmesan cheese, salt, pepper, and oregano. Add the leek and the onions. Pour the egg mixture back into the skillet and place in the oven. Bake the frittata for about 30 minutes, until the center is set. Use immediately or allow to cool (keeps in fridge for about 1 day).
Step 3
Increase the oven to 350°F or preheat if preparation has been delayed.
Step 4
Slice the ciabatta rolls in half and place one slice of Cheddar on each top and bottom slice of bread. Place the bread in the oven and remove once cheese is melted. Simultaneously, reheat the frittata in oven if made ahead of time.
Step 5
Cut the frittata into four pieces and place one piece on each bottom slice of bread. Top with the roasted tomatoes. Close the sandwiches and serve.
