Preheat the oven to 180 Deg C.
Line 12 cup muffin tray with liners or grease them with butter/oil.
In a wide bowl sift in the flour, sugar, baking powder, baking soda, cinnamon and salt.
In another bowl, mash the bananas.
Add in the melted butter, vanilla extract and milk and mix.
Now fold in the chopped strawberries in the dry mixture.
Add the wet ingredients into the dry and mix until just combined.
Do not over mix.
Divide the batter into the muffin moulds and bake it for 18-20 minutes or until a toothpick inserted comes out clean.
Cool it completely on a wire rack and enjoy.