Spinach and cheese pinwheels

I made this appetizer for our office christmas party, and it was a huge hit. I wanted to do something with the puff pastry and I looked up this recipe in the Pepperidge Farms website. It is really easy and tastes good served at room temperature.

Puff Pastry sheet - 1 (I used the trader joe's brand)

Egg - 1
Shredded Monterey Jack cheese - 1/2 cup
Grated Parmesan cheese - 1/4 cup
Green onion - 1 chopped
Garlic powder - 1 tsp
Frozen chopped spinach - 1 box

Thaw the spinach and squeeze of the water form it. This will prevent the pinwheels from getting soggy.
Thaw the pastry sheet at room temperature 40 minutes.
Preheat oven to 400 F.
Mix egg and water. Set aside.
Mix Monterey cheese, Parmesan cheese, onion and garlic powder.
Place the pastry on lightly floured surface. Brush with egg mixture. Top with cheese mixture and spinach.
Roll up the sheet starting on one side until it's rolled all the way. Place it in the freezer covered for 1/2 an hour.
This will help in cutting the sheet, else it will get messy when u try to slice it up.
Now, cut the roll into 1 inch rolls and place on a baking sheet.
Bake 15 minutes or until golden. Serve warm or at room temperature.