Take a two microwave safe bowl add both chocolate in seperate bowl.
Chocolate melt in microwave mix vanilla essence.
Take a heart shape tray pour white chocolate in one tray and second pour milk chocolate set in fridge.
After setting chocolate demould .
Take a 2 piping bag and fill white and milk chocolate.
Take a milk chocolate make a white layer and white chovolate make a layer in milk chocolate.
Set in fridge and enjoy.
