Preheat oven to 425 degrees. Place defrosted puff pastry on a parchment lined baking sheet. Pierce all over with a fork to prevent it from puffing up too much in the oven. Brush with egg wash and sprinkle the edges, like a crust, with the everything bagel seasoning. Bake for 7-10 minutes, until golden brown.
Let cool a bit, then spread the cream cheese across the top, layer your other ingredients, slice and serve!