Preheat your oven to 350°F (175°C). This ensures that your banana bread bakes evenly and rises beautifully.
Grease your loaf pan with butter or spray it with non-stick cooking spray to prevent sticking.
In a mixing bowl, mash the very ripe bananas until smooth. You should have about 1 1/2 cups of mashed bananas. The riper the bananas, the sweeter your banana bread will be!
In a separate large mixing bowl, cream together the softened butter and sugar until light and fluffy. Add the mashed bananas, eggs, milk, and vanilla extract, mixing until well combined.
In another bowl, whisk together the gluten-free flour, baking powder, baking soda, and salt. This step is crucial to ensure that your baking powder and baking soda are evenly distributed throughout the flour.
Gradually add the dry ingredients to the wet ingredients, mixing gently until just combined. Be careful not to overmix, as this can affect the texture of your banana bread.
Gently fold in the chocolate chips or your choice of mix-ins until evenly distributed throughout the batter.
Pour the batter into the prepared loaf pan, smoothing the top with a spatula.
Place the loaf pan in the preheated oven and bake for 55-65 minutes, or until a toothpick inserted into the center comes out clean. The edges should be golden brown, and the top should spring back when lightly pressed.
Once baked, remove the banana bread from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a wire rack to cool completely. Slice, serve, and enjoy the deliciousness!