Puff Pastry with Spinach and Cheese Rolls

Preparation: Start by preheating your oven to 200°C (400°F) and lining a baking tray with parchment paper.
Cook Spinach: In a skillet, heat the olive oil over medium heat and sauté the garlic until it becomes fragrant. Add the spinach and cook until it is completely wilted. Season with salt and black pepper, then let the mixture cool slightly.
Make Filling: In a mixing bowl, combine the cooled spinach with ricotta, mozzarella, and Parmesan cheeses. Stir until the mixture is well blended.
Assemble Rolls: Unfold the puff pastry on a lightly floured surface. Spread the spinach and cheese mixture evenly across the pastry, leaving a small margin around the edges. Roll the pastry tightly into a log and seal the edges.
Prepare for Baking: Cut the log into 2-inch slices and arrange them on the prepared baking tray. Brush the tops with the egg wash and sprinkle with sesame seeds if desired.