Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line it with parchment paper.

Prepare the cream cheese filling: In a medium bowl, beat together 8 oz of softened cream cheese, ¼ cup granulated sugar, 1 large egg, and ½ teaspoon vanilla extract until the mixture is silky smooth and resembles a thick custard.

Make the carrot cake batter. In a bowl, whisk together the dry ingredients: 1 ½ cups all-purpose flour, 1 teaspoon baking soda, 1 teaspoon baking powder, ½ teaspoon salt, 1 ½ teaspoons ground cinnamon, and ½ teaspoon ground nutmeg.

In a separate larger bowl, combine ½ cup vegetable oil, ½ cup granulated sugar, and ½ cup light brown sugar. Whisk in 2 large eggs and 1 teaspoon vanilla extract until well blended. Fold in 1 ½ cups freshly grated carrots.

Assembly: Pour half of the carrot cake batter into the prepared loaf pan, spreading it evenly. Carefully spoon the cream cheese filling down the center, leaving about a half-inch border of batter visible around the edges. Gently cover with the remaining carrot cake batter. For a marbled effect, you can lightly swirl the top layer with a knife, but keeping the cream cheese layer intact is recommended for a distinct surprise.

Bake for 50-60 minutes, or until a toothpick inserted into the cake (avoiding the cream cheese center) comes out with a few moist crumbs. Note that the cream cheese filling may appear slightly jiggly; it will firm up as it cools.

Allow the loaf to cool completely in the pan before removing. Serve as is or accompany with whipped cream, vanilla bean ice cream, a drizzle of caramel sauce, or fresh berries.