Pre-heat oven to 350 degree's. **See oven temp setting tips**
Prepare muffin pans with parchment paper muffin paper liners.
Mixing Bowl # 1: In a separate, medium-sized bowl, whisk together flour, salt, cinnamon, baking soda, and baking powder. Set aside.
Mixing Bowl # 2: In another medium-sized bowl, mash bananas and set aside.
Mixing Bowl # 3: In a large mixing bowl; place butter, brown sugar, and granulated sugar and cream until well incorporated with either standing mixer or hand held mixer.
To mixing bowl # 3; add eggs 1 at a time and mix each until incorporated. Then add sour cream, orange juice, vanilla extract, and mashed bananas and mix until incorporated.
To mixing bowl # 3; Gradually add the flour mixture in small batches, stirring until ingredients are completely combined. Don't over-mix. You just want to bring it together.
At this point, if you would like to also add a chocolate flavor to your banana muffins; add in the chocolate chips and mix by hand with a spatula. Additionally, if you would like a nutty banana muffin, add in walnuts and mix by hand with a spatula. And if you want both chocolate and nuts, then make it a party and mix in both.
The batter will be loose. Trust the process.
Spoon batter into each muffin paper cup liner until each is roughly half full.
Bake at 350F for about 25 minutes or until wooden toothpick comes out clean. Since each oven bakes differently, the toothpick will be your key guide to when the muffins are perfectly ready.
Let muffins cool for about 20 minutes before removing from pans to enjoy!
Easily stored in Rubbermaid containers once fully cooled.