Depending on how cooked you like your hard boiled eggs, the eggs should be done perfectly in 10-12 minutes. That said, depending on your altitude, the shape of the pan, the size of the eggs, the ratio of water to eggs, it can take a few minutes more.. Turn off the heat, keep the pan on the hot burner, cover, and let sit for 10-12 minutes. If you have the type of stove burner that doesn't retain any heat when turned off, you might want to lower the temp to low, simmer for a minute, and then turn it off.