Sift and add the dry ingredients : flour, baking powder, and baking soda.
Add the milk and the vanilla extract, mix until well incorporated.
Divide the batter into 20 to 22 cupcake liners.
Bake the cupcakes for 20 to 25 minutes in an over preheated to 180 C / 356 F.
Allow the cupcakes to cool.
Biscoff Cookie Butter Chantilly
Add the icing sugar to the cold heavy cream and slightly beat them together.
Add the Biscoff Cookie Butter (if too hard, place it in a warm place or microwave it for 5 seconds), and beat everything together until the cream forms peaks.
Place the chantilly in a piping bag.
Make holes in the cupcakes, fill them with the Biscoff chantilly and close them back .
Biscoff Buttercream
Beat the butter that should be in room temperature for a couple for about half a minute.
Add the icing sugar to the butter gradually while continuously mixing until the cream is pale and fluffy.
Add the Biscoff cookie butter and mix again until incorporated.
Pipe the buttercream on the cupcake as wished.
Garnish
Melt the Biscoff cookie butter and drizzle on the cupcakes.