Pre-soak groats in water with lemon juice for 12 hours (overnight). Cover with enough water for room to swell.
Drain and rinse buckwheat.
In a mixing bowl add remaining ingredients and pour into an oiled casserole dish.
Bake at 170’C for 30 - 35 mins (until a skewer comes out clean and golden on top).
Serve with warm milk of choice and optional toppings such as coconut yoghurt, berries or your favourite fresh fruit.