Break the chocolate into small pieces or use chocolate chips. Melt the chocolate: Microwave by heating in 20-30 second intervals, stirring until smooth, or use a double boiler by placing the chocolate in a heatproof bowl over simmering water, stirring until smooth.
In a blender, add the ricotta cheese and melted chocolate.
Blend until smooth, about 1-2 minutes.
Spoon the mixture into a piping bag or directly into serving bowls or glasses.
Pipe or spoon the mousse into serving bowls or glasses.
Serve immediately or chill for 30 minutes for a firmer texture.
Optionally, garnish with chocolate shavings, berries, or whipped cream.
