Preheat oven to 350°F. Spray a standard muffin tin with non-stick cooking spray and set aside.
Add the mashed bananas, melted butter, and milk to a large mixing bowl. Mix to combine.
Beat in the egg and vanilla, and sugars.
Add in the remaining dry ingredients and fold in until just mixed.
Then, fold in the walnuts.
Lightly spray the muffin pan with non-stick baking spray, then evenly divide the batter into each cup, filling about ¾ full. Top with additional walnuts, if desired.
Place in the pre-heated oven and bake for 18-20 minutes, or until toothpick inserted in the center of a muffin comes out clean.
Remove from oven and cool for at least 5-10 minutes before serving. Enjoy!
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Notes
Grease the Muffin Pan: Lightly spray each cup with non-stick baking spray to ensure the muffins release easily after baking.
Don’t Overmix the Batter: Mix just until the ingredients are combined. Overmixing can lead to dense, tough muffins instead of light and tender ones.
Use an Ice Cream Scoop: For evenly sized muffins that bake uniformly, use a large cookie or ice cream scoop to portion the batter into the muffin tin.
Check for Doneness Early: Start checking your muffins a minute or two before the suggested bake time. Insert a toothpick into the center—if it comes out clean or with a few crumbs, they’re ready!