I want to mention something about the mushrooms in this recipe. You can substitute a can of mushrooms for the fresh mushrooms, particularly if you're making this as a freezer meal, but please don't. Fresh mushrooms taste so much better in this recipe than canned does. Trust me on this!
Whenever I make this, I cook up a package of egg noodles and stir the stroganoff through the drained noodles. If I'm heating this in a skillet on the stovetop, I add the noodles into the skillet towards the end of cooking the mixture.
If I'm making this in the Crock Pot, I stir the cooked egg noodles right into the Crock Pot towards the end of the Beef Stroganoff cooking time.