I've made this recipe a few times and it's really good. The technique they use to cook the hamburger is also good with other Southwestern dishes like tacos and enchiladas.
Adapted from Kraft Foods
1 lb. ground beef
1 pck. or 4 tbs. taco seasoning
3/4 cup water
4 10" tortillas
1 can refried beans -or- 1 can black beans, mashed
1 cup cheddar cheese
Preheat oven to 350 degrees.
Brown meat in skillet and drain. Stir in seasoning and water. Bring to boil. Cook on low heat for 10 minutes, stirring occasionally.
Grease a 9" round cake pan with olive oil. Place two tortillas on the bottom (the tortillas will go up the sides a little bit, which is helpful in keeping it all together when you're serving). Cover with half the beans, meat, and cheese. Place 1 tortilla on top and put the remaining beans, meat, and cheese on it. Top with last tortilla.
Bake for 30 minutes or until cheese is melted. Cut into wedges to serve.
* Note: I have also used homemade tortillas for this recipe. Because they are smaller, I used double the amount to get the coverage I needed. It tasted fine, but serving it was messier than with the larger tortillas.