Prepare the oat base: In a deep bowl or small jar, mix the oats, milk, and yogurt. Stir well to evenly distribute the yogurt, creating a creamy base texture for your overnight oats.
Add Biscoff spread: Stir in 1 tablespoon of Biscoff spread, mixing thoroughly to dissolve it into the milk mixture. The Biscoff adds warm spices and a rich caramel taste that infuses into the oats overnight.
Sweeten (optional): If a sweeter flavor is desired, add 1–2 teaspoons of agave syrup or honey, stirring again to combine all ingredients evenly.
Chill overnight: Cover the bowl or close the jar with a lid and refrigerate overnight, or for at least 6 hours. This allows the oats to absorb the liquid, soften, and soak up the Biscoff flavor.
Morning prep: In the morning, take the oats out of the refrigerator. If the texture is too thick, add a splash of milk to reach your preferred consistency, stirring to incorporate.
Top with Biscoff spread: For an extra indulgent layer, drizzle 1 tablespoon of Biscoff spread over the top. To make spreading easier, briefly microwave the Biscoff spread (a few seconds) to slightly soften it.
Garnish with cookies: Sprinkle 1 tablespoon of crushed Biscoff cookies on top for a crunchy texture. Place a whole Biscoff cookie on the side or top for an appealing and decorative finish.