In a small bowl, combine the fresh raspberries and sugar. Gently mash a few raspberries with a fork to release juices, then set aside to macerate for about 10 minutes.
In a mixing bowl, beat the softened cream cheese with powdered sugar and vanilla extract until smooth and creamy.
In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold the whipped cream into the cream cheese mixture until fully combined.
Carefully fold in the mashed raspberries (with their juices) into the mousse mixture, being sure to leave some small chunks for texture.
In small dessert cups, layer the graham cracker crust mixture (mix crushed graham crackers, melted butter, and a pinch of salt) at the bottom, pressing down slightly.
Spoon the raspberry cheesecake mousse over the graham cracker layer, filling the cups almost to the top.
Refrigerate the mousse cups for at least 2 hours to set.
Before serving, garnish with fresh raspberries and a sprinkle of crushed graham crackers on top.
Notes
Serve in clear dessert cups to showcase the layers, and top with a sprig of mint for a pop of color.