01 -
In a large skillet, cook ground beef and diced white onions over medium heat until the beef is browned and onions are tender. Drain excess grease.
02 -
Stir in canned green chiles and taco seasoning, mixing thoroughly until combined.
03 -
Add refried beans to the beef mixture, stirring until evenly incorporated.
04 -
Slice flour tortillas into quarters if desired to reduce overlapping for easier layering.
05 -
Spread a thin layer of enchilada sauce on the bottom of a greased 9x13 inch casserole dish. Add a layer of the beef mixture, then a layer of tortilla pieces. Repeat layering with enchilada sauce, beef mixture, and tortillas, ending with a final layer of beef mixture topped with shredded cheese.
06 -
Bake in a preheated oven at 350°F for 20 to 25 minutes, until the cheese is melted and bubbly.