Preheat oven to 400 degrees.

In a stand mixer or with a hand mixer, beat together butter, eggs, and sour cream.

Add in sugar, flour, and baking soda. Mix just until well combined.

Mash bananas in a bowl until they are totally mashed and smooth. Add in to batter and mix well.

Fold in mini chocolate chips.

Grease a muffin pan and scoop in batter to fill cups ⅔ full.

Bake for 16-17 minutes until light brown and a toothpick comes out clean when inserted in the middle.

Enjoy!