Easy Beef Stroganoff
["1 lb. boneless sirloin steak, cut 3/4-inch thick", "2 Tbsp. vegetable oil", "1 pouch dry onion mushroom soup", "2 Tbsp. flour", "1 1/2 c. water", "1/2 c. sour cream", "hot noodles"]
["Note:", "Freeze steak 1 hour to make slicing easier."]
["boneless sirloin steak", "vegetable oil", "mushroom soup", "flour", "water", "sour cream", "hot noodles"]