1/2 cup 1 stick butter

2 medium onions, diced

3 cups diced boiled potatoes (3 to 4 large potatoes)

3 cups diced cooked corned beef (about 1 pound)

In a large skillet, melt the butter over medium-high heat and saute the onions for 3 to 4 minutes, or until tender. Add the diced potatoes, and cook for 10 to 12 minutes, stirring occasionally. Add the cored beef, and cook for 5 to 6 minutes, until heated through.