White Castle Hamburger Pie is ez and yummy. Just fry up a pound of hamburger and add a package of onion soup mix and half 8oz bag of grated cheddar cheese and mix adding salt and pepper. Pour into a buttered pie plate and top with rest of cheese. Mix 2 eggs, 1/2 c mayo, 1/4 c heavy cream, and pinch of pepper and pour over meat and bake for 30 min at 350. Tastes just like the old days.