this was delicious. I had to use onion powder as well. and didn't have any tomatoes on hand, so I used spaghetti sauce (about 3 or 4 Tbs). Also we were out of cheddar cheese, so I used mozzarella.
This was a very plesant surprise. I was out of onion, so I used onion powder, and I added some leftover kidney beans to it, and it was a wonderful lunch!