Step 1: Preheat oven to 350°F (175°C). Grease and flour a 9-inch springform pan, or line the bottom with parchment paper. This prepares it for your turtle fudge brownie cheesecake recipe.
Step 2: For the brownie base, melt 1/2 cup butter with 1 cup granulated sugar and 1/4 cup cocoa powder in a medium saucepan over medium-low heat. Stir until smooth. Remove from heat and cool slightly for 5 minutes.
Step 3: Whisk in 2 large eggs, one at a time, until well combined. Stir in 1 teaspoon vanilla extract.
Step 4: Gradually add 1/2 cup all-purpose flour and 1/4 teaspoon salt, mixing just until no streaks of flour remain. Do not overmix.
Step 5: Pour batter into the prepared springform pan and spread evenly. Bake for 18-20 minutes, or until a toothpick comes out with moist crumbs. Let cool completely in the pan on a wire rack.
Step 6: Reduce oven to 325°F (160°C). For the cheesecake, beat 24 oz softened cream cheese with 1 cup granulated sugar until smooth and creamy, about 2-3 minutes. Scrape down bowl sides.
Step 7: Beat in 1 teaspoon vanilla extract.
Step 8: Add 3 large eggs, one at a time, beating on low speed just until each egg is incorporated. Do not overmix.
Step 9: Carefully pour cheesecake batter over the cooled brownie base. Gently tap the pan on the counter to release air bubbles.
Step 10: Bake for 55-65 minutes, until edges are set but the center jiggles slightly. Turn off oven, crack door open, and cool in oven for 1 hour. Remove and cool completely on a wire rack. Cover and refrigerate for at least 4 hours or overnight.
Step 11: For the fudge topping, combine 1/2 cup heavy cream and 1 cup semi-sweet chocolate chips in a saucepan. Heat over medium-low, stirring, until melted and smooth. Cool slightly for 10 minutes.
Step 12: Pour cooled fudge over the chilled cheesecake, spreading evenly. Refrigerate for 15-20 minutes to set slightly.
Step 13: Drizzle 1/2 cup caramel sauce generously over the fudge layer.
Step 14: Sprinkle 1 cup chopped pecans evenly over the caramel layer, gently pressing some in.
Step 15: Return the cheesecake to the refrigerator for at least 1 hour to allow toppings to set completely. For clean slices, run a thin, hot knife around the edge before releasing the springform. Wipe knife clean between cuts for a perfect turtle fudge brownie cheesecake recipe presentation.