Make Ahead Tip: Prepare through Step 4. Freeze in a single layer, then stack in a container and cover tightly. The unbaked triangles will keep in the freezer for up to 2 months. Do not thaw before baking.
Tip: Thaw frozen phyllo dough, in its original wrapper, overnight in the refrigerator. Let stand at room temperature for 2 hours before using.
Storage smarts: For long-term freezer storage, wrap your food in a layer of plastic wrap followed by a layer of foil. The plastic will help prevent freezer burn while the foil will help keep off-odors from seeping into the food.