Au Gratin Potatoes

1/2 lb Velveeta, cubed
6-8 potatoes, boiled, peeled, and diced
2 tsp onion flakes
1/4 c butter
3 tbsp flour
2 c milk

Melt butter and onion flakes, then add flour, then add milk. Stir until starts to get thick. (if using microwave, stir every 2 min). Add cheese. Really stir until cheese melts. Pour over potatoes in 9x13 pan or 2 qt casserole dish. Bake at 350 deg for 1 hr.