Roast scotch fillet of beef with mushroom sauce and roast potatoes Recipe | Beef + Lamb New Zealand

Ingredients

• 750g Quality Mark beef eye fillet or scotch fillet
• 2 tsp prepared horseradish
• 2 tsp wholegrain mustard
• 2 tsp brown sugar
• 1 onion
• 1 garlic clove
• 1 cup beef stock
• 1/2 cup sherry
• 4 Portobello mushrooms
• 220g Wattie’s Mushrooms in Butter Sauce
• 6 potatoes i
• 2-4 Tbsp olive oil