01 -
In a small bowl, combine pumpkin puree, ground cinnamon, ginger, nutmeg, and 1/4 teaspoon salt. Stir until evenly blended and set aside.
02 -
In a separate bowl, beat mascarpone cheese and cream cheese with remaining 1/4 teaspoon salt for 30 seconds until smooth. Add the reserved pumpkin mixture and blend just until incorporated.
03 -
Add granulated sugar, flour, and vanilla extract to the cream cheese mixture. Mix gently until just combined. Incorporate egg yolks one at a time, mixing after each addition. Set aside the finished cheesecake batter.
04 -
In a large mixing bowl, whisk together all-purpose flour, unsweetened cocoa powder, baking powder, and salt.
05 -
In a separate bowl, mix melted butter with granulated sugar until fully combined. Whisk in whole eggs and vanilla extract until smooth.
06 -
Stir chocolate chips into the egg mixture. Gradually fold the dry flour-cocoa mixture into the wet ingredients. Mix until just combined, avoiding overmixing.
07 -
Reserve 1/2 cup of the brownie batter. Evenly spread the remaining brownie batter into the bottom of a buttered and parchment-lined 9 x 9-inch baking pan.
08 -
Pour the cheesecake batter evenly over the brownie layer. Spoon reserved brownie batter in 3 to 4 lines across the top. Use a toothpick or small knife to swirl lines into decorative patterns.
09 -
Bake at 325°F (162°C) for 45 minutes, or until the top is just set and a toothpick inserted comes out mostly clean.
10 -
Allow brownies to cool completely in the pan, then refrigerate until thoroughly chilled before slicing and serving.