Prepare apples: Peel, core, and chop the apples into small pieces. Place them in a saucepan with lemon juice, sugar, and cinnamon.

1. Cook apples: Cook the apples over medium heat, stirring occasionally, until soft and tender (about 8-10 minutes). Optionally, add a little water to help cook down.
2. Puree apples: Once cooked, remove from heat and let cool slightly. Puree the apples using a blender or food processor until smooth.
3. Whip cream: In a separate bowl, whip the heavy cream and powdered sugar (if using) until soft peaks form. If using mascarpone or cream cheese, beat them with vanilla extract until smooth before adding whipped cream.
4. Combine mixtures: Gently fold the whipped cream into the pureed apple mixture until fully combined, being careful not to deflate the mousse.
5. Chill: Spoon the mousse into individual serving glasses or bowls. Chill for at least 2 hours to allow the mousse to set.
6. Serve: Serve chilled, garnished with additional cinnamon, whipped cream, or a drizzle of caramel sauce if desired.