Divide the Biscoff spread between 2 mugs, 1½ tbsp per mug. Microwave on high for 20 seconds until the Biscoff spread melts.
In a milk pan, heat milk over medium heat. Add in the vanilla extract and keep stirring until the milk's steaming. Do not allow to boil or scald the pan.*
Remove the milk from heat. Using a hand milk frother, whisk the milk until frothy on top.
Reserving the froth, pour warm milk over the melted Biscoff spread, dividing between the two mugs. Stir in coffee (half of the stated amount per cup) until blended.
Top with milk froth and serve immediately. Add sugar if desire.
Notes
*You can heat the milk using a microwave instead. Add the vanilla extract into the milk and heat it in the microwave on high for 30 seconds. Then froth the milk as instructed above. To serve this Biscoff Latte in the form of iced coffee, add ice cubes into your glass after layering the Biscoff Spread then make the recipe as instructed.