Ingredients:
- 1 ½ cups (180g) Digestive Biscuits, finely crushed
- ½ cup (113g) Unsalted Butter, melted
- 2 tablespoons (25g) Granulated Sugar (for crust)
- 2 tablespoons (15g) Unsweetened Cocoa Powder
- 1 ½ cups (225g) Fresh or Frozen Strawberries, hulled
- ¼ cup (50g) Granulated Sugar (for swirl)
- 1 teaspoon Freshly Squeezed Lemon Juice
- 4 blocks (32 oz / 904g) Cream Cheese, full-fat, softened
- 1 ¼ cups (250g) Granulated Sugar (for filling)
- 4 Large Eggs, room temperature
- 1 Large Egg Yolk, room temperature
- 1 teaspoon Vanilla Extract
- ½ cup (120g) Sour Cream or Full-Fat Greek Yogurt, room temperature
- 4 oz (113g) Dark Chocolate (70% cacao), melted and cooled slightly
Instructions:
- Preheat oven to 350°F (175°C). Prepare a 9-inch springform pan by wrapping the outside tightly and securely with heavy-duty foil.
- Combine crushed biscuits, melted butter, 2 tbsp sugar, and cocoa powder. Press mixture firmly and evenly into the bottom of the prepared pan.
- Bake the chocolate crust for 8–10 minutes. Remove and cool completely on a wire rack.
- To make the swirl: Simmer strawberries, ¼ cup sugar, and lemon juice until soft and jammy (about 10 minutes). Cool slightly, then purée until smooth. Strain through a sieve if a seedless texture is desired. Cool to room temperature.
- Beat softened cream cheese and 1 ¼ cups sugar until completely smooth, scraping down the bowl frequently to ensure no lumps remain.
- Beat in sour cream and vanilla. Then, beat in the eggs and extra yolk one at a time, mixing only until just combined after each addition.
- Gently fold in the slightly cooled, melted dark chocolate until streaks disappear (do not fully incorporate).
- Pour two-thirds of the white filling mixture over the cooled crust. Dollop spoonfuls of the remaining white mixture and the cooled strawberry purée over the top.
- Use a butter knife or skewer to gently swirl the colours together, creating a marbled effect. Avoid over-swirling.
- Place the foil-wrapped springform pan inside a larger roasting pan. Carefully pour boiling water into the roasting pan to reach about halfway up the sides of the springform (create a water bath).
- Bake for 60–70 minutes. The edges should be set, but the very centre should still have a slight wobble.
- Turn off the oven, crack the door open slightly (use a wooden spoon handle), and let the cheesecake cool slowly inside the oven for 1 hour.
- Remove from the water bath, let cool completely on the counter, then chill in the refrigerator for a minimum of 6 hours, preferably overnight, before serving.