Preheat oven to 375 degrees and line a muffin pan with cupcake liners. Set aside.
In a large bowl, sift together flour, baking soda, baking powder, and salt.
Using a stand mixer, start to combine sugar, oil, and eggs until it you achieve a creamy consistency. Add vanilla extract then add your mashed bananas.
Start adding your dry ingredients. Do it slowly, in thirds, and make sure all of the ingredients are well combined. Fold in your strawberries.
Fill each section of your muffin pan with your batter and bake for 15 to 18 minutes (or until golden brown, whilst passing the ‘toothpick test’). Allow to cool before serving!