Preheat your oven to 350°F (175°C) and prepare a baking dish by spraying it with non-stick cooking spray.

In a small bowl, combine half a cup of mayonnaise, two tablespoons of sweet pickle relish, one teaspoon of yellow mustard, and a dash of paprika, onion powder, garlic powder, and salt to create the sauce.

In a skillet over medium-high heat, cook one pound of ground beef with one finely chopped white onion, a teaspoon of salt, and black pepper for 5-7 minutes.

Lay the bottom halves of the slider buns in the baking dish and spread the homemade sauce over them.

Spoon the cooked beef mixture over the sauced buns, add slices of American cheese, and top with dill pickle slices.

Bake the sliders in the preheated oven for 8-10 minutes until the cheese is melted and bubbly.

Remove from the oven, sprinkle shredded lettuce over the melted cheese, and drizzle extra sauce before capping with the top halves of the buns.

Brush melted butter over the top of the buns, sprinkle with sesame seeds, cover with foil, and return to the oven for 10 minutes.

Slice the sliders to serve and enjoy hot.