01 -
Preheat the oven to 400°F. Line a standard muffin tin with paper liners.
02 -
In a large bowl, whisk together the flour, light brown sugar, granulated sugar, salt, and baking powder. Set aside.
03 -
In a small bowl, whisk together the buttermilk, melted butter, egg, and vanilla extract.
04 -
Pour the wet ingredients into the dry ingredients and stir with a rubber spatula until just combined. Gently stir in the chocolate chips. Do not overmix.
05 -
Using a large cookie scoop or a spoon, divide the muffin batter evenly among the muffin tin cups.
06 -
Bake in the preheated oven until golden brown and a toothpick inserted in the center comes out clean, about 20 to 22 minutes. Let cool until barely warm.
07 -
Serve the muffins or store in an airtight container at room temperature for up to 3 days. Muffins can be frozen in an airtight container for up to 3 months.