Famous Dave's Mac'n'Cheese Copycat

1 box Stouffer's man'n'cheese, thawed
1 C corn
1/4 C jalapeno slices, chopped
1 T brown mustard
1 oz. parmesan cheese, shredded
1 oz. cheddar cheese, shredded

Empty mac'c'cheese into mixing bowl; stir in corn, jalapenos, mustard, and cheeses. Spread into a 9x13 baking dish. Bake at 350 for 30 min.