Roasted vegetable tart

Name: Roasted vegetable tart
Prep time: 20 min
Cook time: 55 min
Total time: 1 h 15 min
Cuisine: European, Mediterranean
Ingredients: 1 1/2 sheets frozen ready-rolled shortcrust pastry, partially thawed; 1 tbsp olive oil; 1 small red onion, cut into thin wedges; 2 garlic cloves, quartered; 1 zucchini, halved lengthways, cut into 2cm pieces; 80g small button mushrooms, halved; 4 Roma tomatoes, quartered lengthways; 200g (3/4 cup) fresh ricotta; 50g feta cheese, crumbled; 2 tbsp basil leaves, shredded; Mixed salad leaves, to serve