Preheat oven to 375°; remove focaccia from bag + cut in ½ (save ½ for another use); cut focaccia in ½ horizontally + add to a baking sheet; bake 5 min until toasted

Add half package of peppers, a handful of arugula, ½ package of beef + 4 slices of cheese to one slide of toasted focaccia; close the sandwich + bake 6-8 min until hot + crispy; slice sandwich in ½

Toss remaining arugula with 1 tbsp oil, 2 tbsp vinegar + salt/pep; divide sandwich between plates + serve salad on the side—tasty!