Boil potatoes in a pot of water until tender. Drain, mash and keep warm
Season beef with salt and pepper. Heat oil in a heavy-based roasting dish and brown beef on both sides
Top each piece of beef with 1 tablespoon Sacla Green Asparagus Sauce and wrap in a slice of prosciutto
Arrange tomatoes around beef and bake at 200°C/180°C (fan forced) for 10 minutes. Remove beef and keep warm
Deglaze pan with balsamic vinegar and reduce by half. Turn off heat and mix in butter to form a sauce
Mix remaining Sacla Green Asparagus Sauce into mashed potato and season to taste. Serve beef on top of asparagus mash with roasted tomatoes and drizzle with balsamic sauce
