Blend the whole rolled oats and remaining ingredients (minus the biscoff spread and biscuit).
If using ground oats, simply mix all the ingredients together (minus the biscoff spread and biscuit) in a bowl.
Let the batter rest for 15 minutes, then transfer the batter into lightly oiled ramekins or mini baking dishes.
Add a tsp of biscoff spread to the centre and top with 1 biscuit. Bake for 15 minutes at 180°C.
Take out of the oven and drizzle some melted biscoff spread on top (optional)