Combine quinoa and broth in a small pot over high heat. Bring to a boil, then reduce heat and simmer until broth has been absorbed, about 12 minutes. Remove from heat and fluff quinoa with a fork.
Prepare flax egg by mixing together finely ground chia or flax seeds with water. Allow mixture to thicken for five minutes.
Preheat the oven to 375°F/190°C and prepare a 9 inch (23cm) round baking dish by spraying with a little cooking oil.
Into the pot of cooked quinoa, stir in flax eggs. Scoop quinoa mixture into prepared baking dish. Using wet fingers (helps prevent quinoa from sticking to your fingers) firmly press quinoa mixture into the base and sides of the dish. Bake for 20 minutes.
Spray skillet with a little cooking oil, add onions and cook sauté until soft and translucent. Add minced garlic and cook for a further 2 minutes. Add a splash of water as needed to stop the onions and garlic from sticking to the skillet. Remove from heat and set aside.
Into a blender add silken tofu, nutritional yeast, plant milk, turmeric, salt and pepper. Blend until smooth and creamy. Stir in onions, garlic, asparagus, artichokes and peas.
Pour quiche mixture into baked quinoa crust. Smooth over the surface of the mixture, then top with asparagus spears, artichokes and peas. Bake for 45 minutes or until a skewer inserted into the quiche comes out clean.
Serve warm or cold along side a green salad with a squeeze of lemon juice.
Nutritional information is to be used as a guide only as calories and nutrition vary between products and brands worldwide.