Wash potatoes well. Dice potatoes in 1/4 inch pieces.
Spray a micro-wave safe dish and add potatoes. Spray potatoes lightly and mix to prevent sticking. Cook in micro-wave on baked potato setting. If the potatoes are not quite done add two minutes and cook until desired tenderness.
Spray a non-stick skillet with the olive oil spray. Add potatoes and onions. Brown the potatoes on medium heat for about seven to ten minutes. Serve with your favorite meat.