Fillet with Chipotle Chile

Directions

1. Prepare the sauce: Heat oil in a frying pan. Fry chiles chipotle and ancho briefly. Remove. Add onion and garlic to oil, and brown. Salt to taste. Add more oil if necessary.Add tomatillos, and boil in 3 cups of water for 10 minutes. Remove from heat, and pour mixture into a blender. Add cilantro and blend.; 2. Heat olive oil in a pan, and brown onion slices. Remove onion when browned and discard. Add sauce and cook over low heat for 30 minutes or until fat rises to the surface. Correct seasoning and keep warm.; 3. Prepare the beef: Heat a heavy, dry frying pan. Add a little butter and oil.Brown 4 fillets, frying for 3 to 4 minutes on a side turning once. When juice begins to rise to the surface, sprinkle with salt and pepper. Remove from skillet. Keep warm. Tepeat procedure with remaining 4 fillets. Add beef broth to pan juices. Boil until reduced by half. Add sauce and simmer for 20 minutes.; 4. To serve: place 1 tortilla on each plate. Place 1 fillet on the tortilla, and cover with 1 cheese slice. Slip under broiler to melt cheese. Cover with hot sauce, and sprinkle with cilantro. Serve with refried beans.;