Preheat oven to 350℉
Line 9x5 loaf pan with parchment.
Pour browned butter into a heat proof bowl and stir in sugars.
Whisk in egg and vanilla. Then add cream cheese.
Add dry ingredients stirring just until half way incorporated.
Add mashed bananas and continue to combine.
Pour into pan and bake 45 mins. Check with a toothpick. Cool.