A deeply tender, moist banana pound cake made with ripe mashed bananas, dry vanilla pudding mix, sour cream, and brown sugar — baked low and slow in a bundt or loaf pan and served slightly warm. The vanilla pudding trick keeps every slice extraordinarily moist for days.
Use deeply ripe, heavily speckled bananas for maximum flavour. Cream butter and sugars for the full 3–4 minutes to build proper texture. Add eggs one at a time only. Do not overmix after the flour is added. Bake at 325°F — low and slow is essential for even baking without a dry crust. Do not open the oven before 60 minutes. Let rest in the pan 15–20 minutes before inverting. Cake stays moist for 3–4 days stored at room temperature covered, or up to a week refrigerated.