Cheesy Tex-Mex Casserole

I'm not usually a big casserole making fan...but it had me at "tex-mex" =) This is a variation of Emerill's Ooey Gooey Tex Mex Casserole. His recipe calls for stew meat AND ground beef (among several other variants)....in my opinion that's just too much beef! But if you're a big beefy fan, go ahead and try it. Or add some beans instead like I do and have a great well rounded meal, not too beefy. This is the first recipe with beef in it that my 2 year old has EVER eaten! AND she had seconds!!! Granted, I slathered it in organic sour cream...but still, I've never been able to get her to eat beef before. This is one of hubby's favorite meals. He once came home from a long day and had eaten a burger on the way home but didn't want to tell me (I hate it when he eats right before coming home when I've made a yummy meal!!). I had made this meal that day and he still had 2 servings of it because it's just THAT good. He JUST told me tonight about the burger, and that was like 2 years ago! So even if you're anti-casserole, try this, it really is THAT good!

Ingredients:
1 lb organic ground beef
2 cups organic black beans, cooked
1 organic onion, chopped
4 TB organic tomato paste
2 large tomatoes diced
1 veggie boullion cube
2 cups of water
(or instead of water and boullion you could use 2 cups veggie stock, or beef if you must be that beefy, ha)
Approximately 6 whole wheat tortillas
2 cups organic jack cheese, shredded
2 cups organic cheddar, shredded

In a large skillet, saute onion in a little oil for 3 minutes. Add ground beef stirring constantly until cooked through. Add beans, tomato paste, tomatoes and boullion/water or stock. Bring to a boil, reduce heat, and simmer for 30 minutes. Turn off burner. Preheat oven to 375 degrees. In a large baking dish, pour a couple ladles full of beefy/bean mixture. Top with a layer of tortillas. If using small tortillas, place two side by side. If using large ones, place one whole one and a strip of another to cover the remaining space. Sprinkle cheese over tortillas, and cover with beefy/bean mixture. Follow with another layer of tortillas, cheese, and beefy/bean mixture. Keep layering until beefy/bean mixture is done or you're at the top of the dish. Your last layer should be tortilla covered with cheese. Bake for about 10 minutes. Let cool for 10 minutes before slicing and serving. Top with a dollop of sour cream and some hot sauce