Ingredients

  • 1/2 cup mini bittersweet chocolate chips
  • 1 1/8 cups all purpose flour
  • 1 1/2 teaspoons baking powder
  • 1 1/2 teaspoons baking soda
  • 1/8 teaspoon salt
  • 1/4 cup sour cream
  • 1/4 cup mascarpone cheese, warmed to room temperature
  • 6 tablespoons ( 3/4 stick) unsalted butter, warmed to room temperature
  • 1/4 teaspoon cinnamon; ground
  • 1/2 cup granulated sugar
  • 1 large whole egg, warmed to room temperature
  • 1 large ( 1/2 cup) banana, ripe, pureed
  • Sifter
  • Four mixing bowls
  • Stand mixer fitted with the paddle attachment or hand mixer

Method

  • Prep: Take your eggs and butter out of the refrigerator a couple of hours before you plan to prepare the batter.
  • Preheat the oven to 350F.
  • Prepare a 9 x 5 x 3 loaf pan by coating it entirely with softened butter using a pastry brush.
  • Then, pour a handful of flour into the pan.
  • Invert the pan over the sink, shaking out any excess flour.
  • Mix a handful of flour into the chocolate chips to coat them (this ensures that the chocolate chips dont all end up at the bottom of the loaf).
  • Sift together the flour, baking powder, baking soda, and salt.
  • Combine the sour cream and mascarpone cheese in a bowl with a spatula.
  • In the bowl of a stand mixer fitted with the paddle attachment, or in a mixing bowl (if using a hand mixer), cream together the butter and cinnamon on high speed (you can always do it by hand, too).
  • Gradually add in the sugar, about 1 tablespoon at a time.
  • Continue to beat until the mixture is light in color and fluffy in texture.
  • Stop the mixer and scrape down the sides of the bowl.
  • Then, turn the mixer back on to medium speed and add in the egg.
  • (The mixer should remain running on medium speed through step )
  • Add 1/3 of the flour mixture to the mixing bowl, beating until just incorporated.
  • Add 1/3 of the sour cream-mascarpone mixture to the mixing bowl until it is just barely incorporated.
  • Alternate adding in the rest of the flour and sour cream-mascarpone mixtures to the mixing bowl.
  • Turn off the mixer.
  • Using a spatula, fold in (see Notes) the pureed bananas and the miniature chocolate chips.
  • Do not overmix.
  • Bake at 350F for 50 minutes, or until a toothpick inserted into the center of the pound cake comes out clean.