Line baking sheet with foil.
Heat baking pieces in a saucepan until nearly melted and remove from heat. Stir in extract and mix until smooth. Spread mixture onto baking sheat evenly -- use a spatula -- and spread mixture to 1/3 inch thick. If so desired, sprinkle the bark with food coloring and gently swirl to make o-so-pretty colors.
Chill for 10 minutes or until set and break into pieces. Cover and store in the fridge for up to five days.