Bring the cheese to room temperature. Melt the butter in the microwave just before using. Lightly grease the cake pan with butter (amount separate from listed ingredients) and line with kitchen parchment paper.
Put the chocolate cookies into a plastic bag and use a rolling pin to crush them into fine crumbs. Melt 30 g of butter in the microwave and mix well into the cookie crumbs.
Press the cookie mixture into the bottom of the pan. If you pack them in well, the crust won't break when you cut the cake. Preheat the oven to 170℃.
Cream the cream cheese with a rubber spatula until soft. Add the granulated sugar and mix.
Add the sour cream, unsalted butter, egg yolk, and whole egg to the cream cheese and mix well. Finally, add the corn starch and mix.
Pour the batter into the cake pan.
Bake for about 50 minutes in a water bath at 170℃. If you don't have a water bath function, bake in an oven at 170℃ with a baking sheet of water.
Once baked, let cool. When freshly baked, it will have expanded, but once cooled, it will fall.
Once cooled, let chill in the refrigerator and it's done! Top as you like with powdered sugar so that it looks even more delicious.
Note: If you make it in a square pan, you can make cheesecake sticks.
On Valentine's Day, you can serve it with cocoa.
[Variation 1] If you don't like a bitter taste, you can make the crust with graham crackers instead!
[Variation 2] Melt 25 g of chocolate in a double boiler and mix with 10 g of the cake batter after Step 5. Use the mixture to marbleize the batter.
For a great White Day gift, try this cookie recipe (Recipe ID: 2537292)
Story Behind this Recipe
I made this for my kids, who love homemade sweets, as their snack.
I removed the cream from the Oreos before using them. If it's a pain, you can use it with the cream still intact.
Heat the cream cheese in the microwave for about 40 seconds to soften it and it will be easy to mix.
If it looks like it's baking a bit too much, reduce the heat to 160℃.