Step 1: Prepare the Nut Mixture

1. In a bowl, mix chopped pecans, brown sugar, and cinnamon. Set aside.

Step 2: Layer the Phyllo Dough

1. Preheat oven to 350°F (175°C).
2. Brush a 9×13-inch baking dish with melted butter.
3. Place 2 sheets of phyllo dough in the dish, brushing each with melted butter. Repeat until you have 8 sheets layered.
4. Sprinkle ⅓ of the pecan mixture evenly over the phyllo.
5. Add another 6 sheets of phyllo, brushing each with butter.
6. Repeat the nut layer + 6 phyllo sheets two more times.
7. Finish with 8 more layers of buttered phyllo.

Step 3: Cut & Bake

1. Using a sharp knife, cut the baklava into diamond or square shapes before baking.
2. Bake for 45-50 minutes, or until golden brown and crispy.

Step 4: Make the Syrup

1. In a saucepan, combine honey, corn syrup, brown sugar, water, vanilla, salt, and bourbon (if using).
2. Bring to a boil, then reduce to a simmer for 5 minutes, stirring occasionally.
3. Remove from heat and let cool slightly.

Step 5: Assemble

1. Once the baklava is out of the oven, immediately pour the warm syrup evenly over the hot baklava.
2. Let it soak for at least 4 hours, preferably overnight, before serving.