Mix gelatin powder with cold water to bloom.
In a pan, combine egg yolks, sugar, and cream.
Cook on medium heat until the mixture thickens.
Remove from heat and mix in the bloomed gelatin.
Let the mixture cool and add vanilla extract.
Whip the remaining cream until stiff peaks form.
Fold the whipped cream into the cooled custard gently.
Chill the Bavarian cream in the fridge for one hour.
Preheat the oven to 475°F (245°C).
Roll pizza dough into a 12-inch circle on a floured surface.
Place the rolled dough onto a greased pizza pan.
Spread the chilled Bavarian cream over the dough evenly.
Leave a small border around the dough edges uncovered.
Bake for 15-20 minutes until the edges are golden brown.
Remove from the oven and let the pizza cool slightly.