3 ripe bananas (about 1 ½ cups mashed)

½ cup unsalted butter (melted; substitute: coconut oil for dairy-free)

¾ cup brown sugar (or coconut sugar for a natural sweetener)

2 large eggs

1 tsp vanilla extract

1 ½ cups all-purpose flour (swap with oat flour for gluten-free)

1 tsp baking soda

½ tsp salt

½ tsp cinnamon (optional, for warmth)

¾ cup chopped walnuts or pecans