Preheat the oven to 350°F (175°C) and line a loaf pan with parchment paper.
Mash bananas in a bowl until smooth.
Stir in brewed coffee, melted butter, brown sugar, and vanilla extract.
In another bowl, whisk together flour, baking soda, and salt.
Slowly mix dry ingredients into the wet mixture until just combined.
In a small bowl, mix brown sugar, flour, cinnamon, and softened butter with a fork until crumbly.
Pour the banana batter into the prepared pan and sprinkle the streusel evenly on top.
Bake for 50 minutes or until a toothpick inserted comes out clean.
Let the bread cool slightly before slicing (if you have the patience).