Preheat oven to 375°F. Lightly Spray muffin tin (silicone is best) with oil. You can use parchment paper, but do not use muffin liners, as the muffins will stick to those jagged edges.
In a large mixing bowl, whisk together flour, baking powder, baking soda, salt and cinnamon.
In another bowl, mix mashed bananas, cottage cheese, honey/maple syrup, eggs, melted butter, oil, vanilla extract, and apple cider vinegar until well combined.
Fold together the dry ingredients with the wet ingredients gently until just combined (do not overmix). Using a wooden spoon or spatula works best.
Fold in nuts or chocolate chips if using.
Use ice cream scoop to scoop the muffin batter into the muffin pan. This gives you equal amounts of batter.
Bake for 28-33 minutes, or until a toothpick inserted in the center comes out clean. The tops should be golden brown, but not dark brown. It's best to do the toothpick test the first time you make them, as ovens temps can vary. 🙂
Cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.