Roasted Tomato & Caramelized Onion Tart with Melted Mozzarella

Ingredients

• Caramelized onions
• 3 red onions, sliced
• 2 tbsp olive oil
• 2 tbsp balsamic vinegar
• 1/2 tsp dried thyme
• sea salt and freshly ground black pepper, to taste
• Tart
• 1 sheet all-butter puff pastry
• 10-12 cherry tomatoes, cut in half
• 3/4 cup mozzarella cheese, shredded
• 1 egg, beaten
• 1/2 tbsp sesame seeds
• 1 tsp dried oregano
• 1 tsp dried basil