^are those comparable with the Greek 'Dolmadakia'?
Pictures of Dolmadakia
As for the Dutch national dish... I don't really know what's most Dutch, but 'Stamppot' (mashed potatoes mixed with veggies) is quite high in rank as is the 'Snert' (thick soup made of split peas, with lots of meat and kohlrabi) and 'Hollandse Nieuwe' a.k.a. herring.
Of the stamppot, the one with 'boerenkool' (kale) is most famous, often eaten with smoked sausage, baked bacon cubes and/or other meat.
Stamppot Boerenkool
I like the Sauerkraut mash best.
Zuurkool stamp
How people think about Snert is mixed... I like it, while quite a lot of people really don't like it. I have to admit that it doesn't look too haute cuisine or so, but it really stuffs well

, especially good on cold winter days after you skated on the ice of one of the frozen canals
The recipe is different for everyone. My mom and my grandparents all have their own recipes

and I like my mom's version best
I can make the stamppot, but I haven't tried the snert yet to make, though I helped quite often with it, so I can probably do it, but it'll take a couple of times before I can make it well (it has the habit of turning out different every time you make it, so that's a bit tricky

)
this is how snert looks like:
and a zoom in version, which makes it look not very fashionable