Reminiscent of traditional corn dogs, this fun main dish Corn Dog Casserole is comforting, delicious, and filling!
Preheat oven to 400 degrees F. Coat a shallow 2-quart baking dish with nonstick spray.
In a large bowl, whisk together the egg, milk, ground mustard, and pepper; set aside.
In a medium skillet, melt the butter over medium heat; add celery and hot dogs. Saute until celery is tender and hot dogs are lightly browned, about 5 minutes. Add in the scallions and cook for 1 minute longer. Set aside one cup of the mixture; add remaining mixture to the bowl with the milk.
Add in the cornbread mix and 1 cup of the cheese; stir to combine.
Pour into the prepared baking dish and spread evenly. Top with the reserved cooked hot dogs and remaining 1/4 cup of cheese.
Bake, uncovered, for 25-30 minutes until golden brown.
Serve portions with a nice slab of butter!