Step 1

Bake pastry shells according to package. directions.

Step 2

Slice beef into very thin strips.

Step 3

Heat half the oil in skillet. Add beef and cook until browned, stirring often. Remove beef.

Step 4

Heat remaining oil. Add mushrooms, onion, garlic and thyme and cook until tender.

Step 5

Add gravy and heat to a boil. Reduce heat to low. Stir in sour cream. Return beef to pan and heat through. Serve in pastry shells. Garnish with parsley.