TOPPINGS: torn romaine, chopped tomatoes, sour cream, chopped onion, chopped cilantro and fried tortilla strips
Preheat oven to 350°. In a 10-in. cast-iron or other ovenproof skillet, cook beef over medium heat until no longer pink, 6-8 minutes, breaking into crumbles; drain. Transfer to a small bowl. Stir in beans, salsa and taco seasoning; keep warm. Wipe skillet clean.
Prepare corn bread mix according to package directions; stir in crushed tortilla chips. Pour into skillet. Bake until set, 12-15 minutes. Spread ground beef mixture over corn bread to within 1-in. of edges; sprinkle with cheese. Bake until cheese is melted and crust is golden brown, 3-5 minutes. Serve with toppings.