Cook it in 2ce it's volume of water a la rice. Put it in a pan, add boiling water, cover tightly, reduce heat to low and simmer until liquid is absorbed. You can use it instead of rice/pasta/coucous.
Or you can take your cooked quinoa, mix it with a couple of eggs, garlic, hebs, chopped onion, form into patties and cook as burgers.
or take your cooked quinoa and add some softened onions, garlic, peppers, a couple of diced tomatoes, mixed herbs, other veg (grated carrots,courgettes,chopped spinach, fried mushrooms, whatever) Mix well to combine, beat in a couple of eggs and pour into a casserole dish. Bake at 180 for about 30 minutes. You can top with a little grated cheese if you like.