Rinse the quinoa.
STOVETOP METHOD: Add 1 cup of quinoa, 2 cups of water, and 1/2 teaspoon salt in a saucepan. Bring the water to boil, then reduce the heat to low, and cover the saucepan with a lid. Cook for another 15 minutes, until all the liquid has been absorbed. Turn off the heat and let the quinoa sit, covered for another 10 minutes. Fluff the quinoa with a fork and serve.
SLOW COOKER METHOD: Add 1 cup of quinoa, 1 3/4 cups of water, and 1/2 teaspoon salt to the slow cooker. Cook the quinoa on low for about 2 1/2 to 3 1/2 hours. One important thing to note here is that a different brand of slow cooker may take a longer time. Do a test on your slow cooker first to figure out the appropriate time. Once the quinoa is ready, fluffy it with a fork and serve.
INSTANT POT METHOD: Add 1 cup of quinoa, 1 1/2 cups of water, and 1/2 teaspoon salt to the instant pot. Set the Instant Pot manual mode and cook on high pressure for 5 minutes. Once the timer goes off, let it rest for 10 minutes. Release any remaining pressure and remove the lid. Fluff up the quinoa and serve.