Triple-cheese cauliflower bake recipe | Gourmet Traveller

Ingredients

• 1 small cauliflower (about 1kg), cut into florets and thickly sliced
• 25 gm butter
• 25 gm plain flour
• 400 ml milk
• 1 tsp Dijon mustard
• 100 ml pouring cream
• 100 gm coarsely grated Gruyère
• 80 gm coarsely grated cheddar
• 50 gm finely grated parmesan
• 120 gm coarse sourdough breadcrumbs
• 2 tbsp extra-virgin olive oil
• Finely chopped flat-leaf parsley (optional), to serve