Caramelised Onion, Gorgonzola, and Thyme Tartlets | BBQs In The Hills

Ingredients

• 2 l large red onions
• 1 tbsp tablespoon olive oil
• 2 tbsp tablespoons balsamic vinegar
• 1 tbsp tablespoon brown sugar
• ¼ tsp teaspoon salt
• ¼ tsp teaspoon freshly ground black pepper
• 2 sheets puff pastry
• 1 egg, lightly beaten
• 70 g grams gorgonzola
• Fresh thyme leaves