Position a rack in the center of the oven, and preheat the oven to 350 degrees Fahrenheit.
Heat a large pot over high heat. Add the sugar and submerge it with water. Gently swirl the mixture around until the sugar is dissolved. Bring the mixture to a boil, and let it boil for 5 minutes. Whisk in the lemon juice. Set the mixture aside to cool completely.
1 ½ cups granulated sugar, ¾ cup water, 1 teaspoon lemon juice
Using a sharp knife, slice the phyllo dough in half lengthwise to create two long pieces. Cut each piece into 1-inch sections, and arrange them in a single layer at the bottom of a baking dish.
1 pound Athens phyllo dough
In a food processor, add the walnuts and sugar. Pulse until the mixture is well combined and finely ground. Sprinkle a layer over the phyllo dough.
2 1/2 cups walnuts, 1/4 cup granulated sugar
Repeat the process, adding another layer of phyllo dough followed by more of the nut mixture. Top the dish with the remaining phyllo.
Slice 5 cuts vertically into the top of the dough followed by 8 diagonal slices.
Pour the melted ghee over the dish, coating the dough completely and ensuring it gets into the crevices of the slits.
9 ounces ghee
Bake for 30-35 minutes or until golden brown. Be careful not to burn!
Remove from the oven, and pour the cooled simple syrup on top of the baklava. Enjoy right away!
Store at room temperature for up to 1 week.