Preheat your oven to 325°F (165°C)
Slice the tops off each mini pumpkin and scoop out the seeds and stringy insides until smooth
In a saucepan, combine heavy cream, milk, and pumpkin purée, vanilla, and pumpkin pie spice over medium heat until just warm
In a separate bowl, whisk together the egg yolks egg and sugar.
Slowly pour the warm pumpkin mixture into the yolk mixture while whisking, tempering the eggs gently
Strain through a fine sieve for that perfectly smooth texture.
Pour the custard into the cleaned mini pumpkins
Set them in a deep baking dish and fill with hot water halfway up the sides (a water bath ensures even cooking).
Bake for approximately 45- 60 min. Remove when they are jiggly not sloshy.
Cool to room temperature, then chill for at least 2 hours or overnight.
Optional: Once the custard is completely cool, arrange the edible flowers on the surface.