Cook the quinoa as per the instructions on the packet. Meanwhile blitz your beetroot in a food processor/blender. You can also wilt your spinach at this stage either on the hob or by pouring boiling water over it while its in a colander. If you choose the latter, ensure the spinach has as much moisture squeezed out as possible before finely chopping it
In a bowl add blitzed beetroot, crumbled feta, spinach, one egg, cooked quinoa and mix together. Once fully combined, add the flour and you will see the mixture become denser.
Heat a little oil in a frying pan, then using a tablespoon, create walnut sized balls and place in the pan, flattening them with the back of the spoon. After 3-4 minutes, turn them over and flatten again.
You can cook 3-4 patties at a time, until all the mixture is used. Leave to cool completely before serving to baby.