This is not Hungarian Style but German Style. Sorry this is vague but I only wrote down the ingredients as I watched my Mom make this.
Cut Chuck Roast in cubes and sear on all sides.
fresh mushrooms sliced
chopped pickles ( I know this doesnt sound good but it REALLY makes the dish. Ask me- I'll tell ya =) )
Simmer on low heat adding a tad of water if neccesary. When meat is tender thicken juices with flour. Adjust seasonings with salt and pepper.