In a small microwave-safe bowl, melt white chocolate on 50% power in 15 second increments, stirring in between, until smooth or milk chocolate on regular power in 15 second increments, stirring in between, until smooth.
Freeze 7 minutes to set.Meanwhile, warm a plate and boil a glass of water to warm a spoon.Remove mold from freezer. Flip over and press gentlly on the top of each sphere to carefully onto your baking sheet.
Place the open end of an empty sphere on the hot plate to lightly melt chocolate. Place the melted chocolate edge on filled half to seal, handling the chocolate as little as possible to prevent fingerprints