Although it's delicious on its own, panna cotta is better when served with a topping. I like to melt some dark chocolate and drizzle or spoon it on top of the set panna cotta, then put it back in the fridge. The chocolate will harden again giving you a crunchy texture. Alternatively, you can use chocolate syrup, caramel, or any other sauces of your choice to serve it up. Add sprinkles, chocolate flakes, or chocolate-covered coffee beans to decorate before serving.