Elegant Beef Wellington

Elegant Beef Wellington is an moderately easy dinner. Made with 1 (6 lb.) whole beef tenderloin roast, 1 (17 1/4 oz.) frozen puffed pastry, 1 medium size onion, minced, 1 (8 oz.) pkg. mushrooms, finely chopped and 1/2 tsp. thyme leaves, dried, this recipe delivers authentic, satisfying flavors. A classic recipe that has been enjoyed for generations.