Ingredients:

  • 1/2 cup (100g) granulated sugar
  • 2 tsp (5g) ground cinnamon
  • 2 cups (250g) all-purpose flour
  • 3/4 cup (150g) granulated sugar
  • 1 tbsp (8g) baking powder
  • 1/2 tsp (3g) baking soda
  • 1 tsp (2g) ground cinnamon
  • 1/2 tsp (1g) ground nutmeg
  • 1/4 tsp (1.5g) salt
  • 1 cup (240ml) buttermilk
  • 2 large eggs
  • 1/2 cup (120ml) vegetable oil
  • 1 tsp (5ml) vanilla extract

Instructions:

  1. Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line the bottom with parchment paper.
  2. In a small bowl, whisk together 1/2 cup granulated sugar and 2 tsp ground cinnamon for the swirl; set aside.
  3. In a large bowl, whisk together the flour, 3/4 cup sugar, baking powder, baking soda, 1 tsp cinnamon, nutmeg, and salt until fully combined.
  4. In a separate medium bowl, beat the eggs, then whisk in the buttermilk, vegetable oil, and vanilla extract.
  5. Pour the wet ingredients into the dry ingredients and stir with a spatula until just combined; do not overmix.
  6. Pour half of the batter into the prepared pan. Sprinkle half of the cinnamon-sugar mixture evenly over the top.
  7. Pour the remaining batter over the sugar, then sprinkle the remaining cinnamon sugar on top.
  8. Use a butter knife or skewer to gently swirl the sugar into the batter in a figure-eight motion.
  9. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean and the top is deeply golden.