Melt chocolate in a microwave safe bowl for 30 seconds. Mix with a spoon.
Repeat step 1 until the chocolate is liquid. (Should take no longer than 3 intervals)
Add to mold, spoon by large spoonful's into mold. Rotate mold around until the entire mold is covered on the inside surface. Allow to harden in the refrigerator for 5 minutes.
After chocolate is hardened, repeat step 3.
Return mold to refrigerator for 15 minutes.
After chocolate in breakable heart mold is completed, scrape off any extra chocolate on the outside edge.
Slowly remove chocolate from mold. Be very patient, and pull mold off carefully to avoid breaking your chocolate heart.
Carefully set the chocolate mold aside and fill your box with your candy mix. Invert the heart and set the heart down on cake board.
Decorate as desired, and smash with the hammer!