Cut the phyllo sheets to fit the size of the baking dish. Brush the baking dish with butter, place one sheet, brush the sheet with butter, and place another sheet on top. Repeat this process 7 times (7 sheets).

In a bowl, mix the nuts, pistachios, cinnamon, brown sugar, and honey. Spread the filling mixture over the phyllo sheets arranged in the baking dish, place another phyllo sheet on top, brush with butter, and repeat the process 7 times (7 sheets). Brush the remaining butter over everything, then cut into triangles with a sharp knife.

Bake in a preheated oven at 340°F (170°C) for 30-35 minutes. Meanwhile, boil all the syrup ingredients in a saucepan and let it cool.

Pour the syrup over the hot baklava. Sprinkle more ground pistachios on top. Once the baklava has cooled slightly, place a scoop of ice cream in the middle and enjoy.