Roasted Tomato Tart with Onion Puff Pastry Crust

Name: Easy Tomato Tart with Puff Pastry
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Yield: 12
Ingredients: 1 Basil; 1 lb Heritage tomatoes, mixed; 1 Thyme; 1 Egg; 1/4 cup Onion jam; 1 sheet All-butter puff pastry; 1 Tbsp mixed seeds (poppy, onion, fennel seeds)