Beef & Bean Enchilada Casserole

Preheat oven to 350 degrees. Lightly grease a 2-quart rectangular baking dish. In a large skillet, cook ground beef and onion over medium-high heat until meat is browned. Drain off fat. Stir in pinto beans, chile peppers, chili powder, and cumin. In a small bowl, combine sour cream, flour, and garlic powder. Arrange half of the tortillas to cover the bottom of the baking dish, overlapping as necessary to fit. Top with half of the meat mixture, half of the sour cream mixture, and half of the enchilada sauce. Repeat with remaining tortillas, meat mixture, sour cream mixture, and enchilada sauce. Cover with foil. Bake about 30 minutes or until heated through. Sprinkle with cheese. Bake, uncovered, about 5 minutes more until cheese is melted.