Preheat the oven to 350°F (175°C). Grease or line an 8x4-inch loaf pan with parchment paper.
In a large bowl, mix together mashed bananas, eggs, neutral oil, sugar, and honey until well combined.
Add the flour, salt, baking powder, baking soda, and cinnamon directly into the same bowl with the wet ingredients. Mix until the batter is smooth and there are no lumps of flour.
In a small bowl, mix 1/2 cup sugar and 1 tablespoon cinnamon for the swirl.
Pour roughly half of the batter into the prepared loaf pan. Sprinkle generously with the sugar-cinnamon mixture.
Add the remaining batter on top and sprinkle again with the sugar-cinnamon mixture.
Use a knife to gently swirl through the batter to create a marbled effect.
Bake in the preheated oven for 45 to 50 minutes, or until a toothpick inserted into the center comes out clean.
Let the bread cool in the pan for about 10 minutes before transferring it to a wire rack to cool completely.