01 -
Preheat the oven to 425°F (218°C). Position an oven rack in the middle or upper middle position. Line a standard muffin tin with paper liners.
02 -
In a large bowl, whisk together the flour, baking powder, baking soda, salt, and spices (if using).
03 -
In a medium bowl, whisk together the mashed bananas, granulated sugar, light brown sugar, melted butter, oil, eggs, and vanilla extract until well combined.
04 -
Pour the wet ingredients into the dry ingredients and stir until just barely combined. Gently fold in the chocolate chips.
05 -
Divide the batter evenly among the muffin tin cups, filling each 3/4 full for large muffins. For smaller muffins, fill up to 2/3 full across two pans. Sprinkle with coarse sugar for a crunchy topping, if desired.
06 -
Bake at 425°F (218°C) until golden brown and a toothpick inserted into the center comes out clean, about 14 to 15 minutes.
07 -
Let the muffins cool in the pan for 5 to 10 minutes, then transfer to a wire rack. Serve warm or at room temperature.
08 -
Store the muffins in an airtight container for up to 3 days.