Place chocolate in a small microwave-safe bowl. Heat chocolate until melted for 15 seconds at a time, stirring between each heat time.
Place chocolate in a sandwich baggy and cut a small tip off one of the corners. Drizzle the chocolate onto one side of each cracker. Allow to cool and dry before moving onto the next step.
Add a small dollop of whipped topping to each cracker. Then place 4 or 5 pieces of diced strawberry on top of the whipped topping. Garnish with a sprig of fresh mint and serve.