1. Set the temperature of your oven to 400°F and preheat it, placing a rack in the center. Use paper liners to line a mini muffin tray.
2. Mash the bananas with a fork in a medium bowl, then add the sour cream and vanilla; stir them both into the mixture. It’s beautiful if the mixture appears thick and lumpy.
3. Combine the flour, baking powder, baking soda, and salt in a separate medium-sized mixing basin.
4. Combine the butter and sugar in the bowl of a stand mixer that has been fitted with the paddle attachment. For  2 to 3 minutes on medium, beat the butter and sugar until the mixture is light, frothy, and doubled in volume, scraping down the sides and bottom of the bowl as needed with a rubber spatula.
5. Reduce the speed of the mixer to low and pour in the egg, mixing until it becomes thoroughly incorporated. Scrape down the bowl’s bottom and sides.
6. Pour in the dry ingredients in two equal parts to the mixer on low, only adding the second half after the first half has just been mixed. Beat the mixture on low until it is barely mixed; do this after adding in the banana batter all at the same time.
7. In a separate bowl, whip the micro chocolate chips until they are evenly distributed.
8. Scoop a scant 1½ teaspoon of batter into each paper liner with care. Mini chocolate chips should then be sprinkled on top of each muffin batter.
9. Bake, the mini muffins for 15 minutes, or until a skewer inserted into the center of one muffin comes out with a few crumbs attached, and the muffins acquire a domed shape and golden brown color around the edges. On a wire rack, cool the mini muffins thoroughly in the muffin tray.
10. You can choose to serve the mini muffins either warm or at room temperature. The muffins can also be refrigerated at room temperature for 3 days under a cake dome (or a large dish turned upside down).

This recipe takes an entire cooking duration of 20 minutes, including a prep time of 8 minutes and a cook time of 15 minutes. You can modify this recipe to serve beautiful treats to your family and friends on any occasion.

If you’d like more recipe ideas for mini muffins, then you may like to see this video recipe.