Minute steaks with spinach and parmesan polenta recipe

Ingredients

• 2 large field or portobello mushrooms, sliced
• 150 gram swiss brown mushrooms, halved
• 1 tablespoon olive oil
• 1 tablespoon lemon juice
• 1/2 bunch chives, chopped
• 1/2 cup parsley leaves, chopped
• sea salt and cracked black pepper
• 1 litre chicken stock
• 1 cup instant polenta
• 160 gram baby spinach leaves
• 1/2 cup finely grated parmesan
• olive oil spray
• 8 scotch fillet minute steaks