To cook quinoa on the stovetop, you will need to bring the water or broth to a boil, add the quinoa, and then reduce the heat to a simmer. The cooking time for quinoa on the stovetop is typically around 15-20 minutes. The cooking time may vary slightly depending on the type and quality of quinoa, as well as the altitude and the size of the pot. It's best to check the quinoa periodically to make sure it's not overcooked or undercooked.