Step 1

Prepare the brownie mix in a bowl.

Step 2

In a separate bowl, mix together the cream cheese and the sugar until there are no lumps.

Step 3

Add the egg and vanilla, stirring until evenly combined.

Step 4

Spread the brownie batter in an even layer on the bottom of the pan.

Step 5

Preheat oven to 325°F (165°C) and grease a 9x13 (23x33 cm) baking pan.

Step 6

Place 24 of the sandwich cookies in a single layer on top of the brownie batter. To fill in the edges, cut 6 of the cookies in half and nudge those in.

Step 7

Pour the cheesecake batter on top, spreading it evenly over the cookies.

Step 8

Crush the remaining 6 cookies and sprinkle on top of the cheesecake batter.

Step 9

Bake for about 45 minutes, until the edges are slightly golden brown and the middle is slightly jiggly.

Step 10

Cool and chill for at least 2 hours.

Step 11

Slice and serve!

Step 12

Enjoy!