Preheat your oven to 350º F. Line a 9×5-inch loaf pan with parchment paper, lightly grease with nonstick spray.
In a medium bowl, whisk together flour, baking soda, salt and spices. Set aside.
In a large mixing bowl, combine the butter, brown sugar and granulated sugar. Beat with an electric mixer for 2 minutes until combined and light in color. Add the eggs and vanilla, and mix until well combined, about 30 seconds.
Pour the mashed bananas into the butter mixture and beat until well combined, about 90 seconds. Scrape down the sides of the bowl as needed.
Add flour mixture to the batter and stir with a wooden spoon or spatula just until the flour is incorporated, taking care not to overwork the batter.
Transfer the batter to the prepared pan and bake for 55 to 65 minutes or until a toothpick inserted into the center comes out with a few dry crumbs.
Cool the bread in the pan on a wire rack for 15 minutes. Remove the bread and cool completely on a wire rack.
Notes
Overripe bananas with brown spots on the peel are best for baking. They add natural sweetness, moisture and flavor.Store in an airtight container at room temperature for up to 1 week.Freeze for up to 3 months. Let the loaf cool completely, then wrap in plastic wrap and aluminum foil. Store in the freezer, then defrost in the refrigerator before bringing to room temperature.