Preheat oven to 400° F. Treat your loaf pan with a little cooking spray and line it with parchment paper.
Stir together all dry ingredients in a large bowl with a whisk. Add nuts or chocolate chips if you want.
Whisk the silken tofu and aquafaba together with a fork until slightly frothy. Add to bananas, vegan butter, sour cream/yogurt, vanilla extract, and brandy. Mix with a wooden spoon or a spatula until well combined.
Add dry ingredients to wet ingredients in three parts. Mix together with a spatula until dry ingredients are just moistened. This will be a thick batter and you don’t want to over-mix. Pour the batter into your prepared loaf pan.
Place the loaf pan in the center rack of your preheated oven and bake for about 10 minutes. Then, reduce the oven temperature to 350° F and cook for an additional 45 to 55 minutes, until a toothpick inserted into the center of your loaf comes out clean.
Allow the banana bread to cool for about 10 minutes on wire rack (still in the pan), until gently removing and serving.