Pre-heat the oven to 160°C (fan) / 180°C (conventional) / Gas Mark 4.
Take a 12-hole muffin tin, grease (using 1 tbsp of olive oil) and line the holes with baking paper. Brush a little olive oil into each recess after lining and leave to one side until you are ready to use it.
Mix all your ingredients for the kuku (mashed potato, grated beetroot, grated onion, crumbled feta, garlic, mint, turmeric, eggs, remaining 2 tbsp of olive oil, salt and pepper) in a mixing bowl.
Take the muffin tin and spoon the mixture evenly between the 12 holes.
Place in the oven for 25 mins. To check if the kuku are done, use a thin skewer / tip of a knife to check one by gently poking to the bottom. It should come out clean.
Serve warm or cold with salad, dips and bread as part of a mezze-style meal.