Stroganoff Superb

Ingredients

1lb beef sirloin steak, cut into thin strips
3 tbsp margarine
1/2 c chpped onion
1 4oz can mushrooms, drained
1/2 tsp salt
1/4 tsp dry mustard
1/4 tsp pepper
1 8oz cream cheese, cubed
3/4 c milk
Hot parslied noodles

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