Get your oven ready: Go ahead and warm up your oven to 350°F (175°C) so it’s ready when you are. While it’s heating up, lightly grease a loaf pan with oil spray or a bit of butter to keep your bread from sticking.
Mix up the dry team: Grab a big mixing bowl and stir together the flour, baking soda, and a pinch of salt until everything looks evenly mixed. I like to give it a quick whisk or stir with a fork to evenly distribute everything.
Blend the good stuff: In a separate medium bowl, mash your ripe bananas until mostly smooth. Then stir in the melted (and cooled) butter, eggs, sugar, yogurt (or sour cream), and vanilla extract. Make sure it all comes together into a rich, golden mixture.
Bring it all together: Now it’s time to marry the two mixtures. Gradually add your banana mixture into the bowl with the dry ingredients. Use a spatula to gently stir everything together, just enough so there’s no visible flour left. Don’t overmix, or the bread might turn out dense instead of fluffy.
Into the pan it goes: Once your batter is ready, carefully transfer it into the loaf pan you prepared earlier. Smooth the top a little with the back of your spoon, it doesn’t need to be perfect.
Bake it to perfection: Place your pan on the center rack and bake for around 45 to 60 minutes. You’ll know it’s done when a toothpick poked into the center (not directly in the middle, but slightly off-center) comes out with just a few moist crumbs attached.
Cool before cutting (if you can wait): Give the bread about 15 minutes to settle in the pan before moving it. Then gently transfer it to a wire rack to finish cooling for at least an hour. This helps the texture settle, and trust me, it slices so much better once it’s cool.