2 pounds ground beef
1 onion, small diced
1 tablespoon minced garlic
2 tablespoons flour
2 4-ounce cans diced green chilies
1 10-ounce can green enchilada sauce
8 ounces Mexican cheese blend
1 12- or 18-pack corn tortillas, cut into triangles
Preheat oven to 375 degrees Fahrenheit.
In a saute pan, brown the ground beef with the onions and garlic. Drain any excess oil. Sprinkle in the flour, cooking for another 1 to 2 minutes, mixing well.
Add green chilies and enchilada sauce. Simmer for 3 to 5 minutes, until thickened.
In a casserole dish, spread a layer of tortillas, then a layer of the ground beef mixture, followed by a layer of cheese. Repeat layers until all the beef is used, with the top layer being cheese.
Bake for 20 to 30 minutes, until top is golden and bubbly.