Baking Cinnamon Swirl Donut Bread is a delightfully simple process. Follow these easy steps to create your own loaf:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×5-inch loaf pan.
2. Mix Dry Ingredients: In a large bowl, whisk together the flour, baking powder, baking soda, salt, and ground cinnamon.
3. Cream Butter and Sugar: In another bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Add Eggs: Add the eggs, one at a time, mixing well after each addition.
5. Mix in Wet Ingredients: Stir in the buttermilk and vanilla extract until well combined.
6. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, mixing until just combined. Be careful not to overmix.
7. Prepare Cinnamon Swirl: In a small bowl, mix the brown sugar and ground cinnamon for the swirl mixture.
8. Layer the Batter: Pour half of the batter into the prepared loaf pan. Sprinkle half of the cinnamon swirl mixture on top.
9. Add Remaining Batter: Pour the remaining batter over the swirl layer and top with the last of the cinnamon mixture.
10. Swirl It Up: Use a knife to gently swirl the batter and cinnamon together a few times—don’t overmix; you want nice, visible swirls.
11. Bake the Bread: Place the pan in the preheated oven and bake for 50-60 minutes, or until a toothpick inserted in the center comes out clean.
12. Cool: Allow the bread to cool in the pan for about 15 minutes, then transfer it to a wire rack to cool completely.

With these steps, you’ll have a beautiful loaf of Cinnamon Swirl Donut Bread to enjoy!