In 2 separate saucepans, melt white and milk chocolate separately over low heat, stirring constantly.
Pour half of the almonds into each saucepan and stir to combine.
On a rimmed baking pan lined with wax paper or parchment paper, spread milk chocolate out to desired thickness.
Drizzle white chocolate over milk chocolate and use a wooden spoon or knife to swirl together.
Set aside at room temperature to harden.
Break or cut into pieces before serving.