In a sauce pan, add the water, sugar, vanilla, honey, lemon, and cinnamon and mix to combined. Bring the syrup to a light simmer and simmer for about 1 minutes. Remove from heat and set aside to completely cool.
In a blender, crusht the nuts until finely chopped. Add into a bowl with cinnamon and mix.
Preheat oven to 350°F. Grease the bottom of the 9x13" baking sheet with butter or baking spray.
Place two phyllo sheets into the baking sheet and with a pastry brush, lightly brush with the melted butter. Repeat until you have 10 sheets, butterng every two sheets.
Spread 1/5 of the walnut micture over the phyllo sheets.
Repeat the process of phyllo sheet and butter with 6 sheets,then top with walnuts. You are going to repeat this process 4 times. (So 6 buttered sheets/walnuts, 4 times.)
Add the remaining 10 sheets, buttering every other sheet and no walnut mixture on top.
With a sharp knife cut into about 2 inch rectangles or squares.
Bake at 350°F for 55-60 minutes, or until the baklava is crispy and dark golden.
Once the baklava is baked, pour the syrup all over the baklava. The syrup should sizzle when you pour it. Allow the baklava to cool at room temp. Enjoy!