Enjoy an easy Philly cheesesteak by taking advantage of deli roast beef. Switch up the meat choices and veggies and you can have this melt in a variety of different ways!
Heat oven to 350F / 177C. Open up buns and place onto a sheet pan. Arrange cheese onto buns. Bake buns in the oven until cheese is melted, 5 to 7 minutes.
Heat a skillet over medium-high heat. Add butter and cooking oil and then onions to melted butter with some salt. Saute for 8 to 10 minutes, until lightly caramelized. If the pan ever looks too dry, add a splash of water.
Next add green peppers to the skillet and saute for 3 to 4 minutes.
Fold in roast beef with Worcestershire sauce. Saute for another 2 to 3 minutes, remove from pan and set aside.
Spread Dijon onto buns (if using) and then divide up filling into toasted buns. Toss dressing with lettuce, tomatoes, and green onions. Enjoy salad on the side!