Heat the oil and butter over medium high heat. Add the onion and cook until soft, then stir in the rosemary.

Add the turkey and potatoes and stir, then let sit until the potatoes are a bit crispy.

Stir again and get the other sides of the potatoes crispy. This is where my impatience kills me. You have to let the potatoes sit a bit. They won't get crispy if you keep stirring them.

Once they're done to your liking, mix the gravy in and heat, then serve.