Yes, but in my experience they just aren't as good as making them fresh. Avoid the microwave at all costs if you need to reheat. The best way to reheat leftover ham rollups is to do so on the stovetop or an oven. Stovetop. Add leftover ham rollups to a pan over medium-low heat and cover with a lid. Let heat for around 8 minutes, flipping halfway through and recovering until heated through. Oven. Preheat to 325. Add leftover ham rollups to a pan and cover. Bake for around 15 minutes, until heated through.