Both Phyllo Dough and Puff Pastry are known for their light, flaky texture. Phyllo Dough comes in thin paper like sheets, which are layered (usually with butter brushed between) to create many dishes, like baklava, for example. Puff Pastry is much thicker and is known to puff up while baking. Puff Pastry also contains butter and is a lot heavier than Phyllo Dough.