Preheat oven to 375 degrees F.
Cut potatoes into bite size pieces.
Place potatoes in an oven safe casserole or skillet.
Drizzle with olive oil until potatoes are covered. Toss well.
Add salt and pepper to taste. Add garlic powder if desired.
Arrange potatoes in one layer.
Top with 3 or 4 sprigs of fresh rosemary.
Bake 35 - 40 minutes uncovered until fork tender. Remove and shake potatoes halfway through cooking time.
Discard rosemary before serving.