ADD 1 qt. water to 2 cups uncooked pasta in large skillet; cover. Bring to boil on high heat. Reduce heat to medium-low; cook 8 to 10 minutes or until pasta is tender, adding vegetables to the cooking water during the last 5 minutes of the pasta cooking time. Reduce heat to medium.
STIR in soup, drained and flaked tuna and 1 cup KRAFT Shredded Cheese.
TOP with additional 1/2 cup KRAFT Shredded Cheese; cover and cook an additional 2 minutes or until cheese is melted.* Made with quality cheeses crafted in the USA. Kraft Kitchens Tips Cooking Know-How Cooking the pasta right in the skillet cuts down on dishes. Be sure to measure the exact amount of pasta and water, so that the pasta hydrates properly.