Preheat oven to 325°F. Line muffin tins with liners (recipe makes 6 muffins)
Measure the butter, then place in a medium sized microwave-safe bowl and heat until melted. Whisk in the egg and vanilla.
Whisk in both the granulated sugar and light brown sugar until smooth.
Mash the bananas with a fork to remove large clumps. Measure out 1 cup of mashed banana and mix it in with the other liquid ingredients.
Add the baking soda, salt and flour and whisk until just combined. If you’re using chocolate chips, stir them in now.
Divide the batter between the liners, filling each one almost full. Bake in preheated oven for 18-22 minutes, or until a toothpick inserted in the middle of a muffin comes out clean.
After 5 minutes, transfer the muffins to a cooling rack. Enjoy!
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Notes
Please Note: I highly recommend using a kitchen scale to weigh your dry ingredients. Chocolate Chips and Nuts: This is optional, so feel free to leave out the chocolate chips if desired. You can also add nuts!Mashed Banana: This recipe calls for exactly 1 cup of mashed banana. Be sure to measure this quantity out, because if you use large bananas you could end up with more than 1 cup.Storage and Freezing Instructions:Store in an airtight container at cool room temperature for up to 3 days. Freeze for up to 3 months by placing in a Ziploc bag. Thaw at room temp or heat one at a time in the microwave before serving.