step 1
Heat oven at 200/180 fan/gas mark 6. Fry the onion and the Carrot (if using) in the oil for about 3 minutes. Add the mince and brown. Add the tomatoes, potatoes, paprika, summer savory, salt and some black pepper. Transfer to an oven proof dish, pour over hot water to cover it all. Cook for an hour.
step 2
After about 40 minutes, start making the topping. Warm oil or melt butter in a saucepan. Add the flour and stir until slightly golden, couple of minutes. Gradually add the cold milk and keep mixing until smooth. Add the salt and a grind or two of black pepper. Add the 3 eggs to the sauce and mix well.
step 3
The Moussaka should be about ready, the potatoes will be cooked and most of the water absorbed. Take the Moussaka out of the oven and pour over the topping. Add a sprinkle of cheese if you like. Pop back in the oven for 20 minutes or until golden brown. Serve with green veggies if you like.