Close crisping lid. Preheat the unit by selecting BAKE/ROAST, setting the temperature to 325°F, and setting the time to 5 minutes. Select START/STOP to begin.
Meanwhile, in a bowl, stir together flour, baking soda, and salt.
In a separate bowl, beat together butter and brown sugar. Add eggs and bananas and stir to combine.
Slowly add dry mixture to wet mixture, stirring until just combined.
Grease the Ninja® loaf pan* (or an 8-inch baking pan) and add batter to pan.
Once unit has preheated, place pan on reversible rack, making sure rack is in the lower position. Close crisping lid. Select BAKE/ROAST, set temperature to 325°F, and set time to 40 minutes. Select START/STOP to begin.
When cooking is complete, remove pan from pot and place on a cooling rack. Allow bread to cool 30 minutes before serving.