Making Heart-Shaped Chocolate Mousse is a delightful process. Follow these steps to create this incredible dessert:

1. Melt the Chocolate: Break the dark chocolate into small pieces and place it in a heatproof bowl. Melt it over a pot of simmering water, stirring until smooth. Remove from heat and let it cool slightly.

2. Prepare Egg Yolks: In a separate bowl, whisk together the egg yolks and granulated sugar until pale and creamy.

3. Combine Chocolate and Yolks: Slowly pour the melted chocolate into the egg yolk mixture, stirring continuously until fully combined. Add the vanilla extract and mix well.

4. Whip Egg Whites: In another bowl, beat the egg whites with a pinch of salt until soft peaks form. Gradually add a tablespoon of sugar, continuing to beat until stiff peaks form.

5. Fold in Egg Whites: Gently fold the whipped egg whites into the chocolate mixture. Be careful not to deflate the mixture.

6. Whip the Cream: In a separate bowl, whip the heavy cream until soft peaks form.

7. Combine Mixtures: Fold the whipped cream into the chocolate mixture until just combined, ensuring a fluffy texture.

8. Prepare Molds: Lightly grease heart-shaped molds or ramekins with a little cooking spray to prevent sticking.

9. Fill Molds: Spoon the mousse mixture into the prepared molds, smoothing the tops.

10. Chill: Place the filled molds in the refrigerator for at least 2 hours, or until set.

11. Unmold and Serve: Carefully remove the mousse from the molds before serving.