Another non-Eastern European food I often serve is spinach lasagna. Frozen spinach with a hechsher works fine. I even do it with Ener-G rice noodles for those who are gluten-intolerant. (Other brands of rice noodles tend to self-destruct.) There are lots of recipes and it also does well reheated for Shabat afternoon. You can try meat lasagna with pareve cheese but I have found that the pareve cheeses don’t melt properly when baked and therefore don’t work well in these kinds of recipes.
And a big plus to dairy/pareve meals on Shabat is that you can serve ice cream for dessert, which is guaranteed to make kids happy!