Preheat your oven to 400°F (200°C).

Wash and finely chop your chosen vegetables such as broccoli, spinach, or mushrooms.

In a large mixing bowl, combine the chopped vegetables with ricotta, half of the mozzarella, Parmesan, garlic powder, onion powder, and Italian seasoning.

On a lightly floured surface, roll out your puff pastry sheets into a smooth, even layer and cut them into 4x6 inch rectangles.

Take a spoonful of the cheesy vegetable filling and place it at one end of each pastry rectangle, then roll the pastry around the filling and seal the edges.

Whisk an egg and gently brush the tops of each roll with this egg wash.

Place the assembled rolls on a lined baking sheet and bake them in the preheated oven for about 25 minutes or until golden brown.

Remove the rolls from the oven and allow them to cool for a few minutes on a wire rack before serving.