Preheat oven to 350°F. Brown meat in large skillet on medium-high heat. Drain fat. Stir in Seasoning Mix, tomatoes, beans, corn and green chiles. Bring to boil. Reduce heat to low; cover and simmer 10 minutes, stirring occasionally.
Cover bottom of greased 11x7-inch baking dish with 3 tortillas, overlapping as needed. Layer with 1/2 of the chili mixture and 1 cup of the cheese. Repeat tortilla, chili and cheese layers.