I have seen several versions of this recipe. I just put my own spin on it. This is the way my gang likes it. The picture is not mine; it is from the internet but it gives you a general idea of how the finished recipe should look.
Pour 1 can of chili into a greased 13 x 9 baking pan.
Sprinkle a layer of cheese and chopped onions over the chili.
Heat tortillas in microwave for a few seconds (just to make them pliable enough to roll without cracking)
Spread mustard into center of each tortilla then place the hot dog over each one (you can add chopped onions and a little shredded cheese, or any other optional garnish you prefer, at this point) and roll up.
Place seam side down into baking dish.
Continue until all ten hot dogs are completed.
Top with 2nd can of chili; spread chopped onions over the chili and top with shredded cheese.
Cover and bake at 400 F for about 45 - 60 minutes.
Each person can garnish their chili dogs as they wish.