1/2 Pound(s) ground beef
1 Package(s) au gratin potatoes
2 1/4 Cup(s) boiling water
2/3 Cup(s) milk
1 Cup(s) mexican grated cheese
1 Cup(s) coarsely broken tortilla chips
Preheat oven to 400 degrees.
Cook beef in 10-inch skillet over medium heat 8 to 10 minutes, stirring occasionally, until brown; drain.
Mix uncooked potatoes, sauce mix, boiling water and milk in ungreased 2-quart round casserole. Stir in beef and ½ cup of cheese.
Bake uncovered 30 minutes or until top is light golden brown. Sprinkle chips over casserole; sprinkle remaining cheese over chips.
Bake 3 to 5 minutes longer or until cheese is melted. Let stand 2 minutes before serving.