Creating the perfect Cheesecake Marble Squares is a straightforward process if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 325°F (160°C). Grease a 9×9-inch baking dish.
2. Prepare Crust: In a mixing bowl, combine graham cracker crumbs, ½ cup sugar, and melted butter. Press this mixture into the bottom of the prepared baking dish.
3. Mix Cream Cheese: In another bowl, beat the softened cream cheese until smooth. Gradually add 1 cup of sugar and beat until well combined.
4. Add Eggs and Vanilla: Beat in the eggs one at a time, then add the vanilla extract. Mix until smooth and creamy.
5. Separate Batter: Divide the cream cheese mixture in half. In one half, stir in sour cream until well combined.
6. Melt Chocolate: In a microwave-safe bowl, melt the chocolate chips in 30-second intervals, stirring in between until smooth. Once melted, mix in cocoa powder.
7. Combine Chocolate: Fold the melted chocolate into the second half of the cream cheese mixture until fully combined.
8. Layer the Mixtures: Pour the plain cream cheese mixture over the crust. Then, dollop the chocolate cream cheese mixture on top. Use a knife to swirl the two mixtures together for a marbled effect.
9. Bake: Place the baking dish in the preheated oven and bake for 40-45 minutes or until the center is set and a toothpick inserted into the center comes out clean.
10. Cool: Remove from the oven and allow to cool in the pan for about 20-30 minutes. Then, refrigerate for at least 2 hours before slicing into squares.

By following these steps, you’ll create stunning Cheesecake Marble Squares that are sure to impress!