Steam the pumpkin with the skin on, then let it cool.
Remove the seeds from the pumpkin and separate the flesh.
In a blender, blend the pumpkin, tofu, almond milk, and stevia until smooth.
Dissolve gelatin in hot water, add it to the blender, and blend once more.
Pour the mixture into a mold and chill in the refrigerator for at least 2 hours until set.