Preheat oven to 350° F. Prepare a standard-sized muffin tin by inserting paper cupcake/muffin liners OR by greasing each muffin cup. Set the muffin tin aside.
Place bananas, sour cream, vanilla extract, softened butter and eggs into a large mixing bowl. Use electric mixer to blend well. You will still have little pieces of banana in the batter when done. Add granulated sugar, all purpose flour, baking soda and chocolate chips to the bowl. Stir ingredients until batter is fully blended.
Pour or spoon batter into prepared muffin tin, equally dividing batter into 12 portions. The batter will come up fairly high in each of the paper liners or muffin wells. OPTIONAL: You can add a few chocolate chips to the top of the batter before baking (for appearance), but it is not necessary.
Bake on the middle rack of preheated 350° F oven for 20 minutes, or until golden brown on top. When done, remove from oven. Transfer muffins out of pan to a wire rack to cool slightly before serving. Enjoy!
Banana Chocolate Chip Muffins https://www.thegratefulgirlcooks.com/banana-chocolate-chip-muffins/