01 - Preheat oven to 340°F. Grease a 9x13-inch baking dish with a small amount of melted butter.
02 - Combine walnuts, pistachios, almonds, cinnamon, cloves, and sugar in a bowl. Mix thoroughly to distribute spices evenly.
03 - Unroll phyllo dough and keep covered with a lightly damp cloth to prevent drying while working.
04 - Place one phyllo sheet in the baking dish and brush lightly with melted butter. Repeat with 7 more sheets, buttering each layer (8 sheets total).
05 - Sprinkle one-third of the nut mixture evenly across the phyllo base.
06 - Layer 4 more phyllo sheets, brushing each with butter. Sprinkle another one-third of the nut mixture on top.
07 - Place another 4 phyllo sheets, buttering each layer. Spread the remaining nut mixture evenly.
08 - Complete with remaining 4 phyllo sheets, buttering each one. Brush the top surface generously with butter.
09 - Using a sharp knife, cut the assembled baklava into diamond or square shapes before baking.
10 - Bake for 45-50 minutes until the top is golden brown and crisp.
11 - While baklava bakes, combine sugar, water, honey, cinnamon stick, and lemon peel in a saucepan. Bring to a boil, then simmer for 10 minutes. Remove from heat and cool slightly; discard cinnamon stick and lemon peel.
12 - Immediately after removing baklava from oven, slowly pour the warm syrup evenly over the entire surface. Allow to cool completely before serving.