i do the same - i line muffin trays with ham slices, pour in the Quark, egg, ham and onion mix and cover with my HEXA cheese and bake. Spray the tins with frylight first and ham doesnt stick at all and you have lovely individual mini quiches - fab for when u want quick snack from the fridge!
Also used cottage cheese the first time and found it just lumpy no matter how much i blended it so used quark everytime since and i think it tastes much creamier and cheesier! Yum!x