1 pkg. (12 oz.) VELVEETA Shells & Cheese Dinner
1 pkg. (1 oz.) TACO BELL® Taco Seasoning Mix
3/4 cup BREAKSTONE'S or KNUDSEN Sour Cream
3/4 cup KRAFT Shredded Cheddar Cheese, divided
3/4 cup TACO BELL® Thick & Chunky Salsa
1/2 cup coarsely crushed tortilla chips
TACO BELL® and Logo are trademarks owned and licensed by Taco Bell Corp.