1Preheat your grill or a skillet over medium-high heat.
In a bowl, combine the ground beef, salt, and black pepper. Mix gently to combine.
Divide the beef mixture into 8 equal portions and shape each into a small patty.
Place the patties on the grill or skillet and cook for about 3-4 minutes on each side, or until they reach your desired level of doneness.
During the last minute of cooking, place a slice of cheddar cheese on each patty to melt.
While the patties are cooking, mix the ketchup, mayonnaise, and mustard in a small bowl to create a sauce.
Slice the slider buns in half and lightly toast them on the grill or in a toaster.
Assemble the sliders by spreading the sauce on the bottom half of each bun, adding a beef patty with melted cheese, and topping with sliced pickles.
Place the top half of the bun on each slider and serve immediately.