Mustard crusted rack of veal

Ingredients

• 2 tablespoon wholegrain mustard
• 3 green onions, finely chopped
• 1 tablespoon finely chopped fresh rosemary
• 2 clove garlic, crushed
• 2 tablespoon olive oil
• 1 (1kg) 8-cutlet veal rack
• 2 kumara
• 20 gram butter
• 1/3 cup (80ml) pouring cream
• 1 (200g) brown onion, thinly sliced
• 400 gram button mushrooms, thinly sliced
• 1 tablespoon plain flour
• 1/4 cup (60ml) dry white wine
• 3/4 cup (180ml) chicken stock
• 1/4 cup coarsely chopped fresh flat-leaf parsley