Quinoa is a gluten-free seed that can make a great substitute for rice and other grains. Use quinoa in just about any recipe calling for rice or another whole grain, such as rice salads, couscous recipes, or pilafs. If you keep some cooked quinoa on hand in either the fridge or freezer, you are always ready to toss it into any dish for added texture, body, and nutrition. Quinoa delivers complete protein, providing all nine essential amino acids, something rare to find in a plant product.