This muffin is a favorite of many of our customers, our literary agent, Carla Glasser, among them. The poppy seeds lend an Old-World charm. There is nothing Old World about mascarpone, Italy's cream cheese, though. It's stylish and delicious, and something we like to bake with because, like the buttermilk we use in all our scones, mascarpone contributes texture and tang.
A note about poppyseeds: Like nuts, they can turn rancid if stored for too long at room temperature, or if kept at too high a temperature. To ensure freshness, keep the jar in the freezer.