Beef Nacho Casserole

1 lb. ground beef

1 jar (12 oz) chunky salsa

1 cup frozen sweet corn, thawed and drained

3/4 cup salad dressing

1 Tbs chili powder

2 cups crushed tortilla chips, divided

2 cups (8 oz) natural shredded Colby, Monterey Jack cheese, divided

Heat oven to 350 degrees. Brown ground beef, drain. Stir in salsa, corn, dressing, and chili powder. Layer 1/2 each of the meat mixture, chips and cheeses in 2-quart casserole. Repeat layers. Bake 20 minutes or until thoroughly heated. Top with shredded lettuce and chopped tomato, if desired. Makes 6 servings.