Combine the sugar, cornstarch, and salt in a small pot.
¼ cup (48 grams) dark brown sugar, 2 tablespoons (20 grams) cornstarch, ¼ teaspoon salt
Add the milk and cook slowly over medium-low heat, stirring constantly with a long spoon or whisk until it thickens and reaches a temperature of 203℉ (95℃).
2 cups (480 milliliters) whole milk
Remove the pudding from the heat and stir in the Biscoff spread and vanilla.
½ cup (120 grams) Biscoff cookie butter, 1 teaspoon vanilla
Let it cool slightly, stirring occasionally. Then divide the pudding into one large or four small serving bowls or glasses.
Push a piece of plastic wrap onto the surface of the pudding to prevent it from getting a skin, and chill at least two hours (ideally four or more) before garnishing with the optional whipped cream and crushed Biscoff cookies.
heavy cream, Biscoff cookies