Combine all ingredients, mixing well. Cover and refrigerate for at least 1 hour to allow flavors to develop. Cook your hamburger patties to your liking. To assemble the sliders, start off with your bun, sauce, lettuce, burger, cheese, pickle, and onion. Slice the bottom bun in half to make the middle bun. Top the onion with the sliced bun, sauce, burger, cheese, pickle, lettuce, onion, and the top of the bun spread with sauce. This sauce recipe will make about 8 sliders.