Fillet Steaks with Portobello Mushrooms and Thyme

WHAT YOU'LL NEED

• 3 tablespoons olive oil
• 1 Knorr Beef Stock Pot
• 4 beef fillet steaks
• 400 grams portobello mushrooms thickly sliced
• 4 shallots finely chopped
• 2 cloves garlic finely chopped
• 8 sprigs fresh thyme finely chopped plus extra to garnish
• 100 millilitres red wine
• splash balsamic glaze
• 2 tablespoons fresh parsley chopped (optional)