Preheat the oven to 350°F (175°C).
Butter an 8x4-inch loaf pan. Or line with parchment paper.
In a large bowl, remove the pawpaw flesh from the skins and remove seeds.
Mash with a fork until completely smooth.
Stir the melted butter into the mashed pawpaws until combined well.
Sprinkle in the baking soda and salt. Stir well.
Add in the sugar, egg, and vanilla extract and whisk.
Mix in the flour until completely combined.
Pour batter into the prepared loaf pan.
Bake for 45-60 minutes, or until an inserted toothpick into the center comes out clean. There should be no streaks of wet batter.
Take the bread out of the oven and let cool in the pan for a few minutes. Remove the pawpaw bread from the pan and let cool completely on a wire rack before serving.
Slice and serve. I like to serve it with some butter and a drizzle of honey.