I saw this on food network challenge and oh it looks so good. I have no intention of including the anchovies tho :) Zaar does not accept porchetta as an ingredient so made it pork loin
Combine all ingredients in a bowl, tossing until thoroughly mixed.
For Assembly:
Lightly toast the flatbread in oven. Smear 4 of the flatbread pieces with 1/3 cup Salsa Verde. Layer with sliced porchetta, fontina, arugula and onions. Cover with remaining flatbreqd. Press in Panini press until melted. Serve.