Variations: In place of the rum, try a nice sherry, perhaps an amontillado, or for something very different, limoncello accompanied by grilled lemons.
It is wildly untraditional, but crushed Butter Rum Lifesavers candy make the best garnish for this omelet.
¼ cup light brown sugar
¼ cup unsalted butter
1/3 cup heavy cream
3 tablespoons rum
Place all the ingredients in a medium saucepan over medium-high heat.
Bring the sauce to a gentle boil and let cook for about 3 minutes, stirring constantly to prevent scorching.