Eggnog Creme Brulee

Preheat the oven to 350 degrees F (175 degrees C). Place 4 ramekins or custard cups into a shallow baking dish; add enough water to come halfway up the sides of the ramekins.

Heat eggnog in a pan over medium heat; cook and stir occasionally until simmers, about 10 minutes.

Meanwhile, beat egg yolks and sugar together in a mixing bowl until light colored and frothy. Stir in mascarpone until well blended and smooth; whisk in 1/4 cup heated eggnog. Gradually whisk in remaining eggnog. Pour custard through a fine-mesh-sieve to remove any egg strands. Stir in vanilla extract, nutmeg, and cinnamon. Pour into the prepared ramekins, dividing evenly.