Boil pasta until cooked.
Brown ground beef and drain.
Mix taco seasoning and water with ground beef for 5 minutes.
Add cream cheese to beef mixture and stir until melted and remove from heat.
Put pasta in casserole dish and mix in 1 cup cheese.
Top pasta/cheese mixture with beef mixture and gently mix.
Top with remaining cheese.
Bake at 350F uncovered for 15-20 minutes.