Chopped Cheese Sandwich

1 . Stage

Combine mustard, ketchup, and cherry peppers in the bowl of a food processor. Pulse until smooth and set aside.

2 . Stage

Melt butter in a small skillet over medium-high heat. Add onions and cook until onions are soft and are starting to caramelize, about 5 minutes. Remove from heat and set aside.

3 . Stage

Form beef into two patties and season with salt and pepper. Heat a large cast iron skillet over medium-high heat. Add hamburger patties and cook 5 minutes or until a crust forms on the bottom. Flip patties over and cook 3 minutes.

4 . Stage

Using a wide spatula, break patties up into large pieces. Sprinkle sautéed onion in between spaces of the hamburger pieces. Layer cheese over beef, and cook 2 minutes or until cheese is melted.

5 . Stage

Spread reserved mustard sauce on bottom bun of each hoagie roll. Divide meat mixture between two sandwiches. Top each with shredded lettuce and sliced tomato.