Step 1: Preheat & Prepare the Pan

Preheat oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper and lightly grease it.

Step 2: Make the Carrot Cake Batter

1. In a bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, nutmeg, and ginger.
2. In another bowl, mix brown sugar, granulated sugar, oil, eggs, and vanilla extract until smooth.
3. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
4. Fold in the grated carrots and chopped nuts (if using).

Step 3: Make the Cheesecake Layer

1. In a separate bowl, beat cream cheese, sugar, egg, and vanilla extract until smooth and creamy.

Step 4: Assemble the Bars

1. Pour ¾ of the carrot cake batter into the prepared pan and spread evenly.
2. Pour the cheesecake mixture over the carrot cake layer.
3. Dollop the remaining carrot cake batter on top and swirl with a knife or toothpick for a marbled effect.

Step 5: Bake & Cool

1. Bake for 35-40 minutes, or until a toothpick inserted in the center comes out clean.
2. Let cool completely before slicing into bars.

Step 6: Serve & Enjoy

1. Slice into 12-16 squares and serve chilled or at room temperature.
2. Optionally, dust with powdered sugar or drizzle with cream cheese glaze.