Cheese, Caramelised Onion And Steak Tart | KARAN BEEF | KARAN BEEF

Ingredients

• 300g ribeye steak
• Olive oil
• 1 packet puff pastry, thawed
• 1 egg yolk, beaten
• 75g brie cheese, sliced
• 75g gorgonzola or blue cheese, sliced
• 10g fresh thyme sprigs
• 1 Tbsp fresh or freeze dried tarragon
• Salt and freshly ground black pepper
• Caramelised onions:
• 3 red onions, sliced
• 2 Tbsp butter
• 1 Tbsp olive oil
• 2 Tbsp sugar
• Salt