# What You Need:
→ Crust
01 - 7 ounces Maria cookies or digestive biscuits, crushed into fine crumbs
02 - 2.8 ounces unsalted butter, melted
03 - 2 tablespoons granulated sugar
→ Cheesecake Filling
04 - 21 ounces cream cheese, softened to room temperature
05 - 7 ounces granulated sugar
06 - 6.8 fluid ounces sour cream
07 - 3 large eggs
08 - 1 teaspoon pure vanilla extract
09 - Zest of 1 lime, optional
→ Guava Swirl
10 - 7 ounces guava marmalade or paste
11 - 2 tablespoons water for thinning, as needed
# Steps:
01 - Preheat oven to 320°F. Line a 9-inch springform pan with parchment paper and lightly grease the sides with butter.
02 - Crush Maria cookies into fine crumbs using a food processor. Combine crushed cookies with melted butter and 2 tablespoons sugar until evenly moistened throughout.
03 - Press the crumb mixture firmly and evenly into the base of the prepared pan. Bake for 10 minutes, then remove and allow to cool slightly.
04 - In a large mixing bowl, beat softened cream cheese with sugar until smooth and creamy. Add sour cream and mix until well combined.
05 - Add eggs one at a time to the cream cheese mixture, beating gently just until combined after each addition. Stir in vanilla extract and lime zest if using.
06 - Pour the cream cheese filling over the cooled crust and smooth the top surface with a spatula.
07 - In a small saucepan, gently heat the guava marmalade with 2 tablespoons water until loosened and pourable. If using paste, mash and stir until smooth and uniform.
08 - Drop spoonfuls of guava marmalade over the cheesecake filling. Use a knife or skewer to gently swirl the guava into the filling for a marbled appearance.
09 - Bake for 50 to 55 minutes, until the edges are set but the center still jiggles slightly when gently shaken.
10 - Turn off the oven and crack the door open slightly. Allow the cheesecake to cool in the oven for 1 hour to prevent cracking.
11 - Remove from oven and cool to room temperature, then refrigerate for at least 3 hours or overnight before removing from the pan and slicing.