The filling is a super-savory combination of Italian sausage, sharp provolone and Pecorino cheeses, white wine, and your choice of either bread or cauliflower, along with other aromatics.
For The Filling: Italian Pork Sausage Cauliflower Yellow Onion Baby Spinach
Gather and prep all ingredients. Preheat oven to 350˚F and arrange a rack in the center of the oven.
Then, make the filling: combine the sausage, bread or cauliflower, onion, spinach, white wine, cheeses, egg, garlic and ground black pepper in a bowl and mix well.
Prep the Cubanelle peppers by first cutting off the tops and gently removing as many seeds as you can with either a spoon or your fingers.