Preheat oven to 350 F. Line the bottom and the sides of a 9 x 9 inch pan (or any pan for that matter around that size, circle would probably work just as well) with aluminum foil or baking paper (leaving overhang on all sides so you could easily lift the brownies out of the pan), set it aside. I used wax paper and it stuck to the bottom of the brownies one batch, so becareful. Maybe try a little flour sprinkled on the wax paper beforehand.

In a medium sauce pan, over low-medium heat, melt the chopped chocolate and butter, stirring it constantly, until it's smooth. Let it cool for 10 minutes.

In a small bowl, stir together the flour, cocoa powder and salt, set aside.

Add ¾ cup of granulated sugar into the melted chocolate and whisk it until it's combined.

Add eggs (one at the time) whisking well after each addition. Whisk in the vanilla.

Gently fold the dry ingredients (the stuff that's in the small bowl) into the chocolate mixture and pour into prepared pan, smooth the top of it the best you can.

Arrange Oreo cookies onto brownie layer. What I did was twist the oreos so that I have two halves. Since the batter is to thick you can gently press the cookies to sink halfway into the batter or you can gently lay them on top. Either or will work. Whatever you prefer.

To make the cheesecake layer: In a bowl, beat softened cream cheese until it's smooth and creamy. It may work better if you add in the beaten egg beforehand. Beat in the ¼ cup of sugar, plus the additional 2 Tablespoons of it and then the vanilla extract.

Spoon the cheesecake mixture onto Oreo layer and gently smooth the top of it. Don’t spread cheesecake mixture all the way to the edges, leave 1/3-1/2 inch rim, because the cheesecake being cold will burn easily.

After it cooled for about an hour, I cut it into squares. I tried to cut it in sync with the oreos underneath the cheesecake layer. Then put them in baggies or you can put the pieces on a plate (wrap it) and refrigerate them for 2-3 hours that way instead of in a huge pan. Either or works. Its easier to peal them out if you let it cool in the pan for a couple hours then cut it. I was super hungry though so I couldnt wait to eat it.