Step 1

Preheat your oven to 350 degrees F. Grease a standard loaf pan and set aside.

Step 2

Cream the butter and sugar together until smooth and combined.

Step 3

Add in the egg, beating until smooth.

Step 4

Mix in the mashed bananas, then stir in the sour cream and vanilla.

Step 5

Whisk together the dry ingredients - including chocolate chips.

Step 6

Stir in gently, until just combined.

Step 7

Pour/spoon the batter into the prepared loaf pan, levelling the top.

Step 8

Bake in the oven for 50-60 minutes, until a cake tester or toothpick inserted comes out clean.

Step 9

Remove and cool in the pan for 10 minutes, then release from the pan and cool on a baking rack.

Step 10

Keep wrapped or in a container.