Preheat oven to 350 degrees. Brown the Hamburger and soften the onion. Drain the fat.
Add Taco Seasoning, Salsa, Corn and Water. Bring to a boil. Then simmer for 5 minutes.
Remove from heat. Add the rice, refried beans, and cheese. Carefully mix .
In a greased 9 x 11 casserole dish pour the taco meat, beans, mixture and spread evenly.
Top with 1 cup of the Frito's and bake for 30 minutes at 350. Sprinkle with extra shredded cheddar cheese and bake another 5 minutes. Pull out of oven and cover with the other cup of fritos.