Prep the pan and oven: Heat the oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line with a parchment sling for easy removal.

Mash the bananas: In a large bowl, mash the ripe bananas with a fork until mostly smooth with a few small lumps. You should have about 1 1/4 cups.

Whisk in wet ingredients: Add the oil, brown sugar, eggs, and vanilla. Whisk until the mixture looks glossy and well combined.

Combine dry ingredients: In a separate bowl, whisk the flour, baking soda, salt, cinnamon, and nutmeg until evenly mixed.

Bring it together: Add the dry ingredients to the banana mixture. Stir gently with a spatula just until you no longer see dry flour. Do not overmix.

Fold in extras: If using chocolate chips or nuts, fold them in with a few light strokes.

Fill the pan: Pour the batter into the prepared loaf pan. Smooth the top. For a bakery-style look, sprinkle a teaspoon of brown sugar on top or slice a banana lengthwise and lay it on the batter, cut side up.

Bake: Bake for 50–60 minutes, or until a toothpick inserted in the center comes out mostly clean with a few moist crumbs. If the top is browning too quickly, tent loosely with foil for the last 10 minutes.

Cool: Let the loaf cool in the pan for 10–15 minutes, then lift it out and cool completely on a wire rack before slicing. This helps the crumb set and keeps slices from crumbling.

Serve: Slice with a serrated knife. Enjoy plain, or with a swipe of cream cheese or nut butter.