Gather the ingredients. Preheat the oven to 350°F (175°C). Start by chopping 100 g semi-sweet chocolate.
Chop 50 g toffee or toffee candy bar (Skor).
The Dry
In a large mixing bowl, combine the 300 g all-purpose flour and 250 g sugar. Mix well.
The Wet
In a separate bowl, whisk the 2 eggs, then add the 80 ml vegetable oil and 120 g sour cream. Mix until smooth.
Add the 2 bananas to the wet mixture, mash them until smooth and stir to combine.
The Banana Bread
Pour the wet ingredients into the dry ingredients and stir gently until just combined. Do not overmix.
Add the previously chopped 100 g semi-sweet chocolate and 50 g toffee or toffee candy bar (Skor) and proceed to fold gently in the mix.
Line the loaf pan with parchment paper.
Pour the batter into the prepared loaf pan and spread evenly.
Bake for 60-70 minutes or until a toothpick inserted into the center comes out clean.
Let cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. Proceed to cut into pieces. For dense, cake-like banana bread, a moist center is normal and desirable.
The Serving
Serve your fresh Nana's Banana Bread [Pain aux Bananas de Nana].