Thaw the raspberries. Mix the lemon juice with the honey. Peel and halve the avocados, remove the seeds. Cut crosswise into fine wedges. Arrange one half of the avocado on a plate. Immediately pour lemon and honey juice over them and dust with cinnamon. Puree the raspberries in a blender with sugar. Place a big dollop of the raspberry sauce next to the marinated avocado slices.