Coney Island Casserole

Preheat the oven to 350°F and prepare a 9-inch casserole dish by lightly oiling or buttering it.

Cut the frankfurters into eighths and set aside.

In a large mixing bowl, combine the cooked rice, sliced celery, finely chopped onion, chopped green pepper, and sweet pickle relish or chopped sweet pickles.

In a small bowl, whisk together the mayonnaise and prepared mustard until smooth and well blended.

Pour the mayonnaise mixture over the rice and vegetable mixture, then add the cut frankfurters and toss gently until all ingredients are evenly distributed.

Season the mixture with salt and ground black pepper to taste, stirring to combine.

Transfer the mixture to the prepared casserole dish and spread it evenly.

Bake in the preheated oven for 25 minutes until the casserole is heated through and the top is lightly golden.

Remove from the oven and let rest for 2 minutes before serving.