01 -
Preheat the oven to 350°F. Cook the shoestring French fries according to package directions until crispy.
02 -
In a small bowl, combine mayonnaise, ketchup, mustard, pickle juice, dehydrated onions, and black pepper. Stir until smooth and set aside.
03 -
In a large skillet over medium-high heat, cook ground beef and diced onion, breaking up the meat as it cooks. Season with burger seasoning. Cook until no pink remains, then drain excess grease. Stir in 0.25 cup ketchup and mix well.
04 -
Cut the slider rolls horizontally and lay bottoms and tops separately on a baking sheet. On bottom halves, layer one slice of cheese, seasoned ground beef, desired amount of burger sauce, a second slice of cheese, then crispy French fries.
05 -
Place the tops of the rolls over the fries and brush tops with melted butter for a golden finish.
06 -
Bake at 350°F for 10–15 minutes until the cheese melts completely and rolls turn golden brown. Let cool briefly before serving.