Brown ground beef in a large skillet over medium-high heat.
Drain any grease. Add Worcestershire sauce, ketchup, minced onion and salt and pepper to taste. Stir to combine. Reduce heat to low and let mixture heat thoroughly for 5 minutes.
Preheat grill to medium heat.
Sprinkle some cheddar cheese down the center of each tortilla. Add a few heaping tablespoons of the beef mixture on top of cheese. Drizzle a little mustard on top of the beef, and then add diced tomatoes.
Roll up each tortilla burrito-style.
Place wraps on a preheated grill and grill for 3-5 minutes, or until cheese is melted. Carefully remove wraps from grill and place on a plate. Gently unravel wrap to add some lettuce. Re-roll wrap and then cut in center diagonally.
Serve immediately.
Notes
SERVING SUGGESTION: Steamed green beans.GLUTEN FREE: Make sure Worcestershire sauce, ketchup, tortillas, and mustard are gluten-free.NUTRITION: 482 Calories; 23g Fat; 22g Protein; 45g Carbohydrate; 3g Dietary Fiber; 62mg Cholesterol; 652mg Sodium. Exchanges: 2 1/2 Grain; 2 Lean Meat; 1/2 Vegetable; 3 1/2 Fat; 0 Other Carbohydrates.