Polish Lenten Mushroom "cutlets"

Ingredients

160 gr mushrooms
120 gr onion
45 gr butter
2 rolls
850 ml milk
3 eggs
110 gr breadcrumbs
45 gr butter
4 mixture

Instructions

breadcrumbs. Fry in butter until crisp and brown on both sides. Variation: You could substitute dried mushrooms for part or all of the fresh mushrooms. They are a favorite among the Polish for their rich and interesting flavor."