Quiche
I'd fry-lite the leeks/ham mix the eggs with quark and season, if you have any potatoes peel and grate then squeeze the water out in a teatowel press the spuds into a baking tin and bake until crisp, put the leeks/ham/herbs into the baked potato then add the quark/eggs mixture top with grated cheese and bake until set, if you dont have any spuds just leave that part out