This mascarpone cheesecake is rich, creamy, and effortlessly elegant. It's a perfect dessert for special occasions or any time you want to impress. The buttery graham cracker crust holds together beautifully, while the mascarpone adds a luxuriously smooth texture to the filling and a squeeze of fresh lemon juice adds bright flair. A simple sour cream topping ensures the presentation is pristine, while a final sprinkle of crushed graham crackers adds welcome crunch to every bite.