Step 1

Preheat oven to 200C/400F. Line a muffin tray with cupcake cups.

Step 2

In a bowl, whisk together flour, baking powder, baking soda and salt (and cinnamon if desired) until well combined.

Step 3

In a separate mixing bowl, whisk oil and sugars together. Add in eggs one at a time whisking between each addition. Whisk in vanilla until combined.

Step 4

Whisk in the mashed bananas then fold in the flour mix alternating with buttermilk taking care not to over mix. Batter will be thick. Extras can be folded in at this stage too like the chocolate chips or nuts.

Step 5

Spread batter into cupcake cups making sure to fill to the top, and bake for 8 minutes then, keeping the muffins in the oven, lower the heat to 180C/375C and bake until muffins are cooked through, about 12 - 15 more minutes.

Step 6

Remove from oven and cool on wire rack for 10 minutes. While the muffins are still warm, store in an airtight container to continue cooling completely.