Fill a saucepan 1/3 way full with water and bring to a boil.
Once water reaches a rolling boil, turn it down to a simmer.
Place a heatproof bowl on top of saucepan. It should fit tightly on top of the saucepan and shouldn’t touch the water. Make sure no steam gets into the bowl - it will ruin your melt.
Put first half of carob chips and coconut oil into the bowl. After a couple of minutes start to mix them around. Continue mixing until ingredients reach a smooth consistency and there are no more lumps.
Pour melted carob into an icing bag and add a thin layer into a heart-shaped mold.
Freeze for 5 minutes to set.
In the meantime, lightly melt peanut butter until it's a thinner consistency. You can either do this in a double boiler or the microwave.
Pour peanut butter into an icing bag and add a thin layer into heart-shaped mold.
Freeze for 10 minutes to set.
Repeat the carob melting process with second half of carob chips and coconut oil.
Pour melted carob into an icing bag and add a final layer of carob into a heart-shaped mold.
Freeze for 2 hours, or until completely set.