Heat Milk: In a saucepan, heat milk over medium heat until hot but not boiling.

Mix Hot Chocolate: Remove from heat and stir in hot chocolate mix until dissolved.

Melt White Chocolate: Add white chocolate chips and stir until melted and smooth.

Create Unicorn Colors: Divide the hot chocolate mixture into three bowls. Add a few drops of pink food coloring to one bowl, blue food coloring to another, and yellow food coloring to the third.

Assemble the Drink:

Start by slowly pouring the pink hot chocolate into the chilled glass.

Carefully layer the blue and yellow hot chocolate on top, creating a marbled effect.

Garnish: Top with marshmallows and sprinkles.