Marbled Chocolate Orange Bread

Preheat oven to 350ºF. Lightly spray an 8×4 inch loaf pan with nonstick spray and set aside.

In a large bowl, whisk together flour, baking powder, salt and orange zest. In another bowl, whisk together brown sugar, egg, oil, buttermilk, orange juice and vanilla until well combined. Add this mixture to the dry ingredients and stir until just combined.

Transfer half of the batter to another bowl and whisk in cocoa powder. To the other half of the batter, fold in chocolate chips.

Fill prepared loaf pan with alternating spoonfuls of the two batters. Swirl a knife through the batter to mix the two together slightly and smooth the top. Bake the loaf for 45–50 minutes, or until a toothpick inserted in the center comes out clean. Allow to cool for 10 minutes in the loaf pan, and then turn out onto a wire rack to cool completely.