Indulge in the perfect marriage of creamy cheesecake and rich chocolate brownies with this decadent recipe. Ingredients: 1/2 cup unsalted butter 3/4 cup granulated sugar 2 large eggs 1 teaspoon vanilla extract 1/3 cup cocoa powder 1/2 cup all-purpose flour 1/4 teaspoon salt 8 oz cream cheese, softened 1/4 cup granulated sugar 1 large egg yolk 1/2 teaspoon vanilla extract Instructions: Preheat oven to 350F 175C Grease an 8x8 inch baking pan In a small saucepan, melt the butter over low heat Remove from heat and stir in the sugar, eggs, and vanilla extract until well combined Mix in cocoa powder, flour, and salt until just combined Spread batter into the prepared baking pan, reserving about 1/4 cup of batter for topping In a separate bowl, beat together the cream cheese, sugar, egg yolk, and vanilla extract until smooth Spread the cream cheese mixtu...