Preheat oven to 350℉ and line your loaf pan with parchment paper and set it aside.
In the bowl of stand mixer or using a hand mixer, cream room temperature butter and both sugars till the mixture turns pale and fluffy. About 2 minutes.
½ cup Butter, ½ cup Granulated sugar, ½ cup Brown sugar
Now turn mixer to medium speed and add in eggs, one at a time, beating well after each addition. Next add in mashed bananas, milk and pure vanilla extract. Beat them in to combine too.
2 large Eggs, ¼ cup Whole Milk, 1 teaspoon Pure vanilla extract, 3 medium Bananas
With mixer running on low speed, add in flour, salt, baking soda and cinnamon. Slowly mix wet and dry ingredients together until just combined. Do not overmix at this stage.
½ teaspoon Ground cinnamon, 2 cups All purpose flour, 1 teaspoon Baking Soda, ⅛ teaspoon Salt
Pour the prepared batter in the pre-lined pan and bake the bread for 55-60 minutes. Or until it passes toothpick test. After 30-35 minutes have passed, loosely cover bread with aluminum foil so that it doesn't brown too much as it is cooking in the center.
Start checking the bread at round 50 minutes mark and then check after every 5 minutes for doneness. Once baked, remove bread pan from oven and cool the bread down in pan on a wire rack for around 45 minutes and then flip it over and slice when ready to serve.