Preheat your oven to 190°C fan (210°C conventional / 410°F)
Stick the two sheets of puff pastry together by overlapping them slightly and pressing to seal, then trim into a large circle. Alternatively, roll out a block of puff pastry to your desired size and shape (circle or rectangle both work well). Place on a baking tray lined with parchment.
Spread a generous layer of red pesto over the pastry, leaving a 4–5cm (1.5–2 inch) border around the edges.
In a small bowl, mix the ricotta with 1 tablespoon olive oil, a pinch of salt and pepper, and the zest of half a lemon. Spoon this mixture over the pesto, gently spreading it with the back of a spoon.
Using a vegetable peeler, shave the courgettes into long ribbons. Place them in a large bowl and season with salt, pepper, a drizzle of olive oil, 1 tablespoon honey, and the zest of half a lemon. Toss to combine.
Take one courgette ribbon and curl it into a tight spiral. Place this in the centre of the tart. Continue placing courgette ribbons around it in concentric circles until you’ve used most of them and there’s about 2–3cm of filling left before the border. Gently fold the pastry edges up and over the filling, tucking as needed to form a rustic crust.
Brush the exposed pastry with beaten egg. Drizzle a little more honey over the courgettes and scatter over the fresh thyme leaves.
Bake for 30–35 minutes, or until the pastry is golden, crisp, and puffed and the courgettes have lightly caramelised.
The video below will help with this recipe.