Preheat the oven to 350°F (or 350 degrees / 300°F depending on variation).

Make sure the oven is hot and ready for baking.

Line your loaf pan with parchment paper or grease / spray it.

In a small bowl, whisk flour, baking soda, baking powder, and salt.

You can also sift the flour for better texture.

In a large bowl or stand mixer,

Mash bananas (ripe, brown, spotty, overripe bananas)

Cream butter and sugar until light and fluffy (2–3 minutes, medium speed)

Add eggs and beat until mixed

Add kefir, vanilla extract, coconut oil (if using)

This creates a smooth wet mixture with balanced moisture.

Add dry ingredients into wet ingredients.

Stir gently to combine and avoid overmixing.

Overmixing can ruin the soft texture and consistency of bread.

Fold in:

Chocolate chips

Nuts (hazelnuts, chopped)

Mix just enough to combine.

Pour batter into parchment-lined loaf pan

Place on center rack

Bake for 35–40 minutes or 55–60 minutes or up to 1 hour / 1 1/2 hours depending on variation

The top of the loaf will become firm, springy, and slightly cracked.

Insert a toothpick into the center.

If it comes out clean or with moist crumbs, it is ready

If wet, bake longer

Allow the loaf to cool for 15–30 minutes.

Then remove and place on rack to cool completely.

Slice into a warm slice with a crisp top and enjoy.