Combine all the almond cream ingredients in a bowl and refrigerate.
Combine the egg yolks, sugar, cornstarch, and flour in a bowl and set aside. In a small saucepan, bring the milk with vanilla extract to a boil over medium heat. Gradually add the contents of the bowl to the saucepan and whisk continuously until the mixture is smooth and thick. Strain and refrigerate.
Preheat the oven to 355°F (180°C).
Add a heaping tablespoon of almond cream to the center of each pastry square, fold it to the center, place it in a ring, and bake for 20 to 30 minutes, or until golden. Remove the pastries from the oven and let them cool. Fill each pastry with the cream, sprinkle with powdered sugar, and add cherries.