Divide up hamburger into 16 equal size balls.

Flatten balls and stack two slices of cheese into center of half of the patties.

Top with second patty and gently pinch and shape the edges of the patty to make a circle.

Preheat cast iron skillet over medium heat.

Add butter and onions.

Cook burger patties on top of onions, flipping once, just until done.

Meanwhile, cut sweet rolls in half and place them with insides facing up on baking sheet. Broil for one minute or just until golden brown. (Keep a close eye on them)

Serve sliders some lettuce, tomato, pickles, fried onions on a broiled bun. Use French’s® Spicy Brown Mustard for extra zest!