Preheat oven to 180 degrees. Line a 4 inch pan, with parchment paper hanging outside for easy pullng.
For the brownie layer, melt butter with sugar. Allow to cool slightly and whisk in the remaining ingredients. Pour into the prepared pan and bake for 10 minutes.
For the cheesecake, beat all ingredients till smooth.
And then make the cookies by beating the butter and sugar till fluffy. Add the egg and beat. Add in the rest of the ingredients and fold with the spatula. Roll into nine balls and keep ready.
Pull out the pan. Reduce the temperature to 160 degrees.
Spread the cheesecake batter on the brownie. Drop the cookie balls in equal spaces.
Bake for another 50 minutes.
Allow to cool completely, and then cool in the fridge for a couple of hours until set. Cut and serve.