Part 1: Preparation of Burger Filling

Formation of Patties:

• Separate the ground beef into twelve equal portions. Flatten each portion into a small, thin patty, ensuring that each is slightly larger than the bun to accommodate for shrinkage during cooking.

Cooking of Patties:

• Preheat a grill or skillet over medium heat.
• Season the patties liberally with salt and pepper.
• Place the patties on the heated grill or skillet, cooking them for approximately three to four minutes on each side or until they are thoroughly cooked. In the final minute of cooking, place a slice of cheese on each patty to allow it to melt properly.

Preparation of Buns:

• Slice the mini burger buns in half and lightly toast them using a pan or an oven.
• Brush the top halves of the buns with melted butter and evenly distribute the sesame seeds over them.

Assembly of Toppings:

• Combine the shredded lettuce with half of the chopped onions to be used within the burgers.

Part 2: Assembly of the Mini Big Macs

Construction of Burgers:

• Apply a generous amount of Big Mac sauce over the bottom halves of the buns.
• Layer a small amount of the lettuce and onion mixture on each sauced bun half.
• Position the cooked, cheese-topped patties over the lettuce.
• Place a pickle slice atop each patty.
• Cap each assembly with the sesame seed-adorned top bun half.

Finishing Touches:

• Arrange the completed mini Big Macs on a serving platter.
• Optionally, provide additional Big Mac sauce on the side for dipping or extra dressing.

Serving Suggestions:

• Serve the mini Big Mac cheeseburgers immediately while they are fresh and warm to fully enjoy their flavors. Accompany with crispy fries or a light salad for a balanced meal.