Psivage

I'm going to make Beef Wellington for my mom's birthday, but i can never make the dough anygood, it always break and crumble, I read somewhere you can use a pre-made pastry dough, does anyone knows what kind?

*Edit: Filo dough works very well. It's what we used at the restaurant. You can buy it in the freezer section of most stores.

Edit: Thank you very much.