Preheat oven according to package directions for fries (we cook ours at 425°F).
Heat butter and oil in a frying pan over medium heat. Add onions and cook for 2 minutes, then add 2-3 tbsp water. Cook for 6-8 minutes until water evaporates & onions turn golden, and repeat adding water/cooking until onions are soft and caramel in color, about 20-25 minutes total. Season with salt at end.
1 sweet onion, 1 tbsp butter, 1 tbsp olive oil, ¾ cup water, Salt to taste
While onions are cooking, toss frozen fries with olive oil and seasoned salt. Bake for 20 minutes or according to package directions.
1 bag frozen fries, 1 tbsp olive oil, ½ tsp seasoning salt
Cook burger patties on stove or grill until desired doneness. Cut into pieces.
2 burger patties
Mix the sauce ingredients together in a bowl.
½ cup mayonnaise, ¼ cup ketchup, 2 tbsp yellow mustard, 1 tbsp dill relish, ½ tbsp sweet relish
Top cooked fries with burger pieces and American cheese.
6 slices American cheese
Bake for 3-5 minutes or until cheese is melty.
Add caramelized onions, special sauce, and pepperoncini, if using.
¼ cup Sliced pepperoncini