To make triangles: Lay 1 sheet of filo on a flat surface. Keep remaining sheets covered with a towel to prevent them from drying out. Brush the sheet with melted butter. Fold in half crosswise. Brush again with butter. Cut lengthwise in equal strips about 2 inches wide.
Place a small amount of filling in a corner of each strip. Fold corner with filling over, enclosing filling and forming a triangle at the top of the strip.
Continue to fold the strip, maintaining triangular shape. Brush top with melted butter. Repeat with remaining filo and filling. Triangles may be refrigerated completely covered overnight or frozen.
Before serving triangles, preheat oven to 400 degrees Lightly butter baking sheets. Place thawed or frozen triangles on baking sheet . Bake 15 to 20 minutes or until golden Serve immediately . Will make about 48 appetizers with each filling.
Meat Filling
In a medium skillet over moderate heat, brown ground meat until crumbly. Add onion and garlic. Stir over medium heat until onion is limp. Pour off any fat. Stir in salt, cinnamon, allspice and pepper. Cool before assembling triangles.
Triple-Cheese Filling
Beat egg in a small bowl. Add cheese and seasonings. Mix well.