200°C for 15 minutes -> 180°C for 50 minutes
Preheat the oven to 220°C.
In a bowl, mix soy milk, sweetener, egg yolk, and vanilla bean well.
Sift in cake flour and corn starch, then mix together.
Add melted butter and mix thoroughly.
Let the batter rest in the refrigerator for at least 12 hours.
Butter the canelé molds and fill them about 80% with batter.
Bake at 220°C for 15 minutes, then at 180°C for 45 minutes.
Cool and serve.