Heat Your Oven: Set your oven to 325°F (163°C) and ready your loaf pan with some grease.
Prepare Dry Stuff: Grab a big bowl. Toss in flour, baking soda, and salt. Stir it up.
Ready the Wet Stuff: Find another bowl. Whip together egg, sugar, oil into a smooth mix. Throw in buttermilk, a dash of vanilla.
Merge with Bananas: Let the mashed bananas join the wet stuff, then carefully fold in the dry stuff you mixed earlier.
Time for Walnuts & Chocolate Chips: Carefully mix in walnuts and chocolate chips.
It's Baking Time: Empty your mix into the greased loaf pan. Let it bake. It needs 60-70 minutes. Or stick a toothpick in – it's done when the toothpick comes out clean.
Time to Cool: Let your lovely loaf chill in the pan for 10 minutes. Then pop it onto a cooling rack.