These are truly great!
6 T. butter
1 white onion, halved and sliced
3 medium to large cold baked potatoes, chopped
2 tsp. Worcestershire sauce
dried red pepper flakes
salt and pepper
bacon, cooked and chopped (optional)
Melt the butter in a skillet over medium heat. Add the onion and cook for one minute. Stir in the potatoes and toss until well coated. Sprinkle with Worcestershire sauce and red pepper flakes. Cook, tossing occasionally, until the potatoes are crisp, about 20 minutes, adding more butter if they become to dry. Add bacon, if desired. Serve.