Depending on whether you're a half-full or half-empty sort of person, this recipe is either simple but time consuming or time consuming but simple. Either way, it's worth the effort!
For the syrup:
1 cup sugar
1 cup water
1/2 inch thick slice of lemon
1 stick cinnamon
1 cup honey
Combine sugar, water, lemon, and cinnamon stick. Bring to a boil. Reduce heat and simmer about 15-20 minutes, until it has the consistency of light syrup (about 1 1/3 cups). Pour into glass measuring cup with the honey. Cool, then remove lemon and cinnamon. This can be made a day in advance and kept, covered, at room temperature--I leave the lemon and cinnamon in until it's time to pour the syrup.Pastry/Filling:
~1 cup ground almonds
~1 cup ground walnuts
1/4 cup sugar
1 Tbsp ground cinnamon
1 pound filo pastry, thawed in refrigerator, then brought to room temperature
2 sticks unsalted butter, melted
Combine nuts, sugar, and cinnamon. It's okay to use up to 2 1/2 cups nuts, but fewer nuts = crisper, flakier pastry.
Skim foam from butter. Brush 9 x 13" pan with butter.
Lay filo on the counter and cover with a damp cloth. This will keep it from drying out and cracking. Gently lift a sheet of dough and spread neatly in the pan. Butter it lightly. Other sheets of dough will be wrinkled to fit in the pan (so rips don't matter) and buttered lightly--brush or dab.
After putting 6 buttered filo sheets in the bottom of the pan, sprinkle with 1/4 of the nut mixture. Top with 1 more buttered sheet, then 1/4 filling. Repeat.
Layer on the remaining filo sheets, buttering each (~9). Spread the top piece out flat and trim the edges to fit the pan.
Carefully cut partway through the layers (down to the beginning of the nut layer) in a diamond pattern: make diagonal cuts, starting at the top (short side) and going to the right (long) side. Then make vertical cuts from top to bottom.
Bake at 325* until the top is golden and crisp and edges pull away from the pan sides,an hour or longer. (The bottom will be darker than the top.)
Pour cool syrup over hot baklava (stay "inside the edges" of the baked pastry). Let stand to absorb the syrup, at least 3 hours. (I cover it loosely with waxed paper.) Cut through the bottom layer and serve.
If you think there is too much pastry on top, you can put more sheets of dough on the bottom instead. It won't make the bottom layer noticeably taller, though.