Peel the bananas and add them to a large bowl. Mash the bananas with a fork or potato masher. Then, add the whisked eggs, vanilla extract, Greek yogurt, and unsweetened applesauce. Whisk these wet ingredients.

In a separate large bowl, mix the flour, baking soda, baking powder, sweetener, cinnamon, nutmeg, and salt.

Add the wet ingredients to the dry ingredients a little at a time, until the batter is combined, making sure not to over-mix.

Gently fold the peeled and diced apples into the batter.

Lightly spray a silicone non-stick muffin pan with oil or add parchment muffin liners to a muffin tin. Use a 1/4 cup measuring cup or large ice cream scoop to pour the batter into the muffin pan.

Bake the muffins at 350°F for 20-26 minutes, or until a toothpick inserted into the center of a muffin comes out clean. Once done, let the muffins slightly cool and enjoy!