One of the easier meals is Kutia. It's a bit regional, and known especially past the east border (those parts used to belong to Poland), but worth a try and one of my favourites. Pronounced: "kootya".
Traditionally it was made of wheatberries, poppy seeds, honey, various nuts, dried fruit and raisins. In many recipes milk or cream is also used. In some Slavic countries, rice is the main ingredient.
Kutia is a peculiar, traditional dish known in Ukrainian, Belarussian, Lithuanian and Eastern Polish cuisine. It is one of the 12 dishes traditionally served during Christmas Eve supper by Eastern Slavs. Kutia is a blend of wheat grains, poppy, malt, honey and a so-called bakalie: various nuts, raisins, and some other additions. In our times, almonds or candied orange peel are also used. On account of a large content of grains of wheat kutia seems to be quite a special dish - eating or rather chewing it takes some time. This traditional Polish dessert cannot simply just be swallowed down at once.
Believe or not, packages of poppy seeds are legally sold in Poland. You need to grind them twice or thrice in a meat grinder.
"Bakalie" are sold in packages too, although people used to Polish cuisine usually apply common sense.
The "Tastingpoland" website is one of my favourites. A very good guide to polish cuisine. It makes my mouth wet every time.
Pictures (just type kutia in google and click on 'pictures'):
How to make