Preheat oven to 350°F. Grease and flour 9x5x3-inch loaf pan.
SWIRL
In a small bowl, combine swirl ingredients and set aside.
BREAD
In a large bowl, whisk together sugar, flour, baking powder and salt. Make a well in the center of the flour mixture; set aside.
In a separate bowl, beat egg with a fork; stir in milk and oil. Add egg mixture to flour mixture. Stir just until moistened, batter will be lumpy.
Pour half of the batter into prepared pan. Sprinkle with half of the cinnamon mixture. Pour remaining batter on top and sprinkle again with remaining cinnamon mixture. Use a knife to dip into the batter and swirl it around in a circular motion.
Bake 45 to 50 minutes or until a toothpick inserted in the middle comes out clean.
Cool pan on rack for 10 minutes, then remove loaf to wire rack to cool completely. Wrap and store bread overnight before slicing for best flavor.
Notes
To toast the nuts: Preheat your oven to 300 degrees F. Roast 10 to 15 minutes in a 300 degree oven until you can smell them. Give them a couple shakes while they are toasting to move them around a bit.