Tiramisu Chocolate Mousse Recipe

Combine espresso and butter in the top of a double boiler over simmering water.

Place dark chocolate pieces in the espresso mixture; cook without stirring until chocolate starts to melt about 3 minutes. Whisk chocolate and espresso mixture until well combined. Remove from heat and set aside.

Combine Marsala egg yolks and sugar in a saucepan over medium-low heat whisking constantly until frothy and thickened 3 to 5 minutes. Remove from heat.

Stir mascarpone cheese into marsala mixture.

Combine chocolate mixture with mascarpone mixture. Cool to room temperature.

Whip heavy cream in a bowl until soft peaks form 2 to 3 minutes.

Fold half of whipped cream into cooled chocolate mixture.

Fold second half of whipped cream into chocolate mixture. Cover with plastic wrap and chill in refrigerator for at least 2 hours.