Preheat the oven to 180 C (350 F). Butter and line a 20 x 20 cm (8 x 8 inch) pan.
BLONDIES LAYER: In a large bowl, combine melted butter with sugar, vanilla extract and salt. Whisk in the eggs. Gently fold in the flour and spices. Pour the mixture into the prepared pan.
CHEESECAKE TOPPING:
In a small bowl, mix cream cheese, sugar, eggs and vanilla. Spread this mixture over the top of the blondie batter.
Place in the preheated oven for 30-40 minutes. Allow blondies to cool completely before cutting.