Preheat the oven to 350 degrees F. Grease a muffin pan.
In a mixing bowl, add mashed banana, eggs, vanilla, and self raising flour. Mix until smooth. Gently fold the raspberries in.
Pour the batter into each muffin tin. Bake in the preheated oven for 20-23 minutes, or until a toothpick inserted into the center comes out clean. Baking times may vary, so keep an eye on your muffins in the last few minutes.
Cool and enjoy!
