01 - Line an 8-inch square baking pan with parchment paper, leaving an overhang on two sides for easy removal.
02 - In a small saucepan, combine the diced strawberries, granulated sugar, and lemon juice. Simmer over medium heat for 5 to 7 minutes, stirring occasionally, until the berries break down and the mixture thickens slightly. Set aside to cool completely.
03 - In a microwave-safe bowl, combine the chopped white chocolate, sweetened condensed milk, and butter. Microwave in 30-second intervals, stirring well between each burst, until the mixture is completely melted and smooth.
04 - Stir the vanilla extract into the melted fudge base until evenly incorporated.
05 - Pour the fudge mixture into the prepared pan and smooth the surface with a spatula into an even layer.
06 - In a small bowl, beat together the softened cream cheese, powdered sugar, and heavy cream until smooth and creamy.
07 - Spoon small dollops of the cooled strawberry compote and the cream cheese mixture evenly over the fudge surface. Drag a toothpick or knife through the dollops in a figure-eight motion to create a marbled swirl effect.
08 - Refrigerate the fudge for at least 2 hours, or until firm and fully set.
09 - Lift the fudge slab out of the pan using the parchment overhang. Cut into 16 even squares and serve chilled.