01 - Line the bottom of a 9-inch springform pan with parchment paper.
02 - In a medium bowl, combine graham cracker crumbs, melted butter, and sugar until evenly mixed. Press firmly into the bottom of the prepared pan. Refrigerate while preparing the filling.
03 - Sprinkle powdered gelatin over 3 tablespoons cold water in a small bowl. Let stand for 5 minutes to bloom.
04 - Beat cream cheese in a large bowl until smooth. Add Greek yogurt, powdered sugar, vanilla extract, and lemon juice. Beat until creamy and thoroughly incorporated.
05 - Microwave the bloomed gelatin for 15 seconds until completely dissolved. Cool briefly, then whisk into the cheesecake mixture.
06 - Pour the filling over the chilled crust. Smooth the top with a spatula. Refrigerate for 2 hours until fully set.
07 - Dissolve fruit-flavored gelatin in 1 cup boiling water, stirring well. Add 1/2 cup cold water and mix. Allow to cool to room temperature without setting.
08 - Gently pour the cooled jello over the set cheesecake layer. Refrigerate for at least 2 additional hours until the jello is firm.
09 - Run a thin knife around the edge before releasing the springform ring. Garnish with fresh berries or fruit slices if desired. Slice and serve chilled.