Oven-Fried Beef Chimichangas
["1 (2 lb.) lean top-sirloin steak, trimmed of all fat", "1 c. chopped onion", "2 cloves garlic, minced", "1 (4 oz.) can chopped green chiles, undrained", "1 tsp. ground cumin", "1/2 tsp. dried oregano", "1/4 tsp. salt", "1/4 tsp. dried crushed red pepper", "8 (8-inch) flour tortillas", "8 c. shredded lettuce", "1 c. picante sauce", "1/2 c. nonfat sour cream"]
["Place steak in an ovenproof Dutch oven coated with vegetable cooking spray.", "Cover and bake at 325\u00b0 for 1 1/2 to 2 hours or until tender.", "Remove steak from Dutch oven and let cool to touch."]
["onion", "garlic", "green chiles", "ground cumin", "oregano", "salt", "red pepper", "flour tortillas", "shredded lettuce", "picante sauce", "nonfat sour cream"]