01 -
Get your oven hot at 350°F. Coat an 8x4-inch bread tin with lots of cooking spray.
02 -
Dump mashed bananas into a big bowl with melted butter, sugar, beaten egg, and vanilla.
03 -
In another bowl, mix your gluten-free flour, baking soda, baking powder, and salt together.
04 -
Pour dry stuff into wet stuff and mix until everything's blended. Don't worry about small banana chunks in the mix.
05 -
Dump your mixture into the greased pan. Let it bake for 50-60 minutes until a stick comes out clean when poked in.
06 -
Let it sit on a rack for 15 minutes before taking it out. Wait till it's totally cool to cut it.