Cheesy Potato with beef

1 lb ground beef 1 potato , peeled and chopped (1/2-inch squares, like homefries) 2 cups vegetable oil or 2 cups canola oil 1/3 cup water 1 tablespoon chili[...]

1 lb ground beef , cooked and drained 2 (4 ounce) cans mushroom stems and pieces , drained (optional) 2 (5 3/4 ounce) packages au gratin potato mix 4 cups[...]

1 lb ground beef , cooked and drained 2 (4 ounce) cans mushroom stems and pieces , drained (optional) 2 (5 3/4 ounce) packages au gratin potato mix 4 cups[...]