Copycat Crunchwrap Supreme

Name: Copycat Crunchwrap Supreme
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: Mexican, American
Ingredients: 5 large flour tortillas (10-inch); 1 pound lean ground beef; ⅓ cup water; 1 ounce taco seasoning (1 packet, about 2 tablespoons); ⅔ cup nacho cheese sauce; 4 tostada shells (or 2 cups tortilla chips); ⅔ cup sour cream; 1 cup shredded iceberg lettuce; 1 cup diced fresh tomatoes; 2 cups shredded Mexican cheese blend