Chef Brad Leone goes on a back-to-school adventure as a cafeteria chef, experiencing life on the lunch line.

1. Preheat oven to 350 degrees. 2. Toss potatoes, carrots, celery, white onion and garlic in olive oil and roast on a sheet pan in the oven for 15-20 minutes, until the vegetables just start to brown.

Chef Brad Leone makes the world-famous Italian sub, layering meats, cheeses, and fresh toppings like a pro.