Preheat the oven to 350 degrees.
In a large skillet over medium heat, sauté the ground chuck for 5-7 minutes. Add the jalapeño & onion; continue cooking for another 5-7 minutes until the beef is cooked through and onions are translucent. Stir in the minced garlic and cook for another 60 seconds. Drain any excess fat.
Mix in the green chiles, tomatoes with green chiles, taco sauce, and refried beans. Cook the mixture on low heat and simmer for about 15 minutes.
Spread a thin layer of the meat/bean mixture into a baking dish. I either use a 9x13 or a round 3quart casserole dish. Cover with a layer of tortillas, followed by more meat mixture and then a layer of shredded cheese. Repeat tortilla, meat, & cheese layers until all the tortillas are used. Finish off with a layer of meat mixture and cheese.
Bake in the preheated oven for 25-30 minutes, or until the cheese is slightly browned and the casserole is bubbly.
Garnish with chopped fresh cilantro or green onions, if desired.
