without any hassle, just 10 minutes

Ingredients:

2 medium eggs.
1/2 cup sugar (100g).
3/4 tablespoon vanilla extract.
~ 6 and 3/4 tablespoons flour (50g).
~ 3 and 1/4 tablespoons cornstarch (25g).
~ 3 and 1/4 cups milk (800ml).
5 tablespoons butter (75g).
700g palmier (puff pastry).