This easy recipe is the perfect party food, and tastes just like White Castle slider burgers! No making patties, just a layer of meat, topped with cheese and pickle.
You'll only need a few simple ingredients to make this easy recipe. Let's round them up and get started!
In a small bowl, whisk together the mayonnaise, ketchup, and mustard and set that aside.
Heat olive oil in a large skillet, add diced onions, and cook until soft. Then add in ground beef, onion soup mix, and steak seasoning.
Next, slice the slider rolls in half using a serrated knife. Place the bottoms of the sliders evenly into a baking dish and spread the meat on top.
Top the meat with your cheese slices (you might need to cut them to fit). Then top with pickles.
Place bun tops on top, brush with melted butter, and sprinkle with sesame seeds. Then cover with foil and bake for 15-20 minutes.
When they come out of the oven, leave the foil on top for 5 – 10 minutes. Then dig in!