For preparation, preheat the oven to 350°F degrees.
Grease a 10 x 4.5-inch loaf tin with cooking oil spray. Place a baking sheet in the pan and grease lightly again with cooking oil spray.
In a large mixing bowl, mash the ripe bananas with a fork until smooth.
Add the melted butter while it’s still hot. Add the baking soda, salt, light brown sugar, and cinnamon, and continue whisking with the fork.
Stir in the eggs and vanilla extract when the mixture cools. Beat well with a hand whisk.
Add the self-raising flour and whisk until you get a homogenous batter. Pour the batter into the tin.
Place the tin into the middle rack of the oven. Bake for 50 minutes. After 40 minutes, check frequently to avoid overbaking. Remove when a toothpick comes out clean.
Let the banana bread rest at room temperature for half 20 minutes. After this resting period, place a serving platter over the loaf tin and flip it. Carefully remove the baking sheet.
Serve the banana bread in slices.