Polish Chicken Roulades (zrazy)

"Crunchy on the outside and juicy on the inside, chicken roulade turns out to be very tasty and gentle. As a filling for chicken breast roulade, we will use boiled eggs and hard cheese mixed with dill and melted butter. Today, for the recipe, we will need chicken fillet crushed in a blender or meat grinder. Zrazy is a meat roulade dish popular in Poland (Silesian rouladen), western Belarus and Lithuania. Its origin can be traced back to the times of the Polish–Lithuanian Commonwealth. "