Step 1- Blanch the Asparagus
Fill a large bowl with cold water and set aside. In a wide skillet, bring about an inch of water to a gentle boil. Add the asparagus and cook for 3 to 5 minutes, until bright green and just tender. Drain and transfer to the ice water to stop the cooking, then drain again and pat dry.
Step 2- Preheat the Oven
Preheat your oven to 180°C (360°F) with the fan on, or 200°C (390°F) if your oven doesn't have a fan setting. Line a baking tray or tart pan with parchment paper.
Step 3- Prep the Pastry
Roll out the puff pastry directly onto the lined tray or tart pan. Prick the surface all over with a fork to prevent excessive puffing during baking.
Step 4- Make the Tofu Ricotta
In a medium bowl, mash the firm tofu with a fork until it reaches a ricotta-like, slightly crumbly texture. Mix in the vegan parmesan, cornstarch, nutritional yeast, half the lemon zest, and a pinch of salt and pepper until well combined.
Step 5- Spread the Filling
Spoon the tofu ricotta mixture over the pastry and spread it out evenly.
Step 6- Arrange the Asparagus
Arrange the asparagus spears over the top. If using plant-based prosciutto, roll a few slices to resemble roses and tuck them among the asparagus tips.
Step 7- Bake
Bake for 15 to 20 minutes, until the filling looks slightly puffed and the pastry edges turn golden and crisp.
Step 8- Garnish and Serve
Grate a little extra lemon zest over the tart just before serving for a fresh, zesty finish. Enjoy warm or at room temperature.