Summer veg tart

Name: Summer veg tart
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Cuisine: British
Ingredients: 1 x 375g pack ready-rolled lighter puff pastry; 3 medium eggs, beaten; 250g tub ricotta; 20g (3/4oz) Parmesan, grated; 1 tbsp Dijon mustard; 5 salad onions, sliced; 1 tbsp mint, chopped; 2 tbsps parsley, chopped; 2 tbsp chives, chopped; 220g (7 1/2oz) fine beans; 150g (5oz) petit pois; 150g (5oz) broad beans; 100g (3 1/2oz) feta, crumbled; 1 tsp olive oil; 1 lemon, zested and juiced