Step 1

Preheat the oven to 400 degrees F.

Step 2

Heat the vegetable oil in a 12-inch cast-iron skillet or enameled braiser over medium-high heat. Add the celery and onions and season with a pinch of salt. Cook, stirring occasionally, until softened, 6 to 7 minutes. Add the ground beef and season with the chili powder, cumin, garlic powder, celery salt, cinnamon, black pepper and 1/2 teaspoon salt. Use a large spoon to break the meat up into small pieces. Cook, stirring occasionally, until the beef is no longer pink, 6 to 7 minutes. Stir in the tomato sauce, relish, Worcestershire sauce and mustard until combined. Cook, stirring occasionally, until the sauce is slightly thickened, 5 to 7 minutes. Remove from the heat and sprinkle with the Cheddar.

Step 3

Arrange the corndogs on top in concentric circles until fully covered. Bake until the corndogs are golden brown and crispy; start checking at 25 minutes. Let cool for 15 minutes before serving, then garnish with the chives, if desired.