Line and grease a 8 inch springform cake pan.
Combine crushed biscuit crumbs & melted butter together in a mixing bowl. Press the biscuit crumbs onto the base of the prepared pan and chill in fridge for later use.
Cook the Raspberry sauce first. Place frozen raspberries, water in pot and sprinkle Tagatose over it & bring to boil at medium Heat. Use a fork to mash the raspberries when softened and stirring occasionally until sauce thickens, approx. 5 minutes. Strain the sauce through a fine mesh sieve to remove the seeds. Set aside for later use.
Wrap the tofu in cheesecloth & press out water by placing heavy object on top for approx 15 min.
Soak gelatine powder in water & leave aside for approx 5 minutes.
In a food processor, blend cream cheese, tofu, yoghurt, fresh milk, Tagatose and Vanilla Stevia till smooth.
Heat gelatin powder mixture in double boiler till melted, add to cream cheese mixture and blend well.
Divide cream cheese mixture into 2 portions, adding 4 ½ tblsp raspberry sauce into 1 portion and blend well. Pour raspberry cream cheese into pan and put in freezer for Approx. 10 min. to semi-set.
Gently pour the plain cream cheese on top of raspberry cream cheese and shake the pan a little then smoothen with spatula. Add dots of raspberry sauce to surface and use chopstick to create heart shaped swirls. Chill cake in fridge for at least 4 hours or overnight. Use hot knife for perfect slices.