CORN DOG GROUND BEEF CASSEROLE!! Best Recipe Ever!

1 1/2 lbs ground beef 1 med onion 1 tsp garlic powder 1 tsp onion powder 1 tsp chili powder 1/2 tsp salt 1/2 tsp black pepper 2 cans ro-tel 2 cans chili with beans 1 1/2 cups shredded cheese 12 hot dogs 2 TBSP sour cream (optional) Corn dog batter: 2 cups yellow corn meal 1 cup AP flour 2 TBSP sugar 3 TBSP baking powder 1/2 tsp salt 2 eggs 2 cups milk