This recipe is great. I have made it numerous times (the hubby insists I make it at least once a month!) and have made a few minor changes.
Firstly, I use 2 lbs. of meat, 1 1/2 lbs. of ground beef and 1/2 lb. locally homemade hot sausage.
I saute the onions with the meat mixture instead of adding it to the cream cheese mixture and use double the amount of diced tomatoes.
I also use a whole 16 oz. container of sour cream and the whole 8 oz. container of cream cheese. I also use about 1/2 cup more of the cheddar on top.
The best and most flavorful change I made, however, was adding a package of dried onion soup mix to the sour cream/cream cheese mixture. I did this the very first time I made it and it turned out great. I tried it once without it because I didn't have any on hand and the dish just wasn't the same.
In all, a great recipe. The hubby's buddies now flock to my house when they find out I'm making it, so I have to make 2 batches every time. Thanks for the great recipe!