Preheat your oven to 200°C (392°F).
In a baking sheet, combine the sliced Hokkaido pumpkin, quartered red onions, and garlic head.
Drizzle with olive oil and sprinkle with salt. Toss to coat evenly.
Roast the vegetables in the preheated oven for 30-35 minutes, or until the pumpkin is soft and the onions are caramelized.
Remove from the oven and allow to cool slightly.
Reduce the oven temperature to 180°C (350°F).
Unroll the puff pastry on a clean surface.
Spread the cream cheese horizontally in the center of the pastry, leaving enough space at the edges.
Layer the roasted Hokkaido pumpkin on top of the cream cheese.
Follow with the roasted red onions.
Squeeze the roasted garlic cloves from their skins and add them next.
Drizzle honey over the filling, then sprinkle with chili flakes and crumbled gorgonzola.
Make diagonal cuts in the puff pastry from the center outwards, leaving the middle intact.
Fold the pastry over the filling, alternating sides, to create a braided effect.
Brush the top with the beaten egg and sprinkle with sesame seeds.
Place the strudel on a baking sheet lined with parchment paper.
Bake in the oven for 25 minutes, or until the pastry is golden and flaky.
Allow the strudel to cool for a few minutes before slicing. Serve warm as an appetizer or main dish.