Line a rimmed baking sheet with foil.

Coarsely chop cookies, set aside.

Melt white chocolate in the microwave. Immediately stir in Biscoff Spread and stir until smooth.

In a separate bowl melt milk chocolate in the microwave.

Pour white chocolate/Biscoff mixture into your prepared pan. Drizzle the milk chocolate on top and swirl around the pan with a butter knife to get a marbled look.

Immediately sprinkle cookies and sprinkles on top. Let cool.

When set, cut into pieces.