Beef Stroganoff

This is a recipe I learned from my mother. It has never been written down, so there are not exact measurements.

1 lb. ground beef
1 can cream of mushroom soup
sour cream (about 1 C.)
1 small can sliced mushrooms, drained
salt
pepper
egg noodles, cooked according to package directions

In large skillet, brown ground beef. Drain. Stir in soup and sour cream. Salt and pepper to taste. Stir in mushrooms. Heat through. Serve over egg noodles.