Preheat Oven and Prep Pan:
Set oven to 350°F (175°C). Coat a mini muffin tin with nonstick spray or line with a silicone mini muffin pan.Whisk Dry Ingredients:
In a medium bowl, combine almond flour, cinnamon, baking soda, and salt (if using) by whisking.Mix Wet Ingredients:
In another bowl, blend mashed bananas, beaten eggs, applesauce, and vanilla extract until smooth.Combine Batter and Fold Blueberries:
Add the wet mixture to the dry ingredients and stir just until incorporated; avoid overmixing. Carefully fold in frozen blueberries until they are spread throughout.Fill Mini Muffin Cups:
Spoon the batter into 24 mini muffin cups, filling each slightly above the rim.Bake and Cool Muffins:
Bake for 20-23 minutes, until a toothpick inserted in the center emerges clean. Let the muffins cool fully in the pan before taking them out.