01 -
Preheat the oven to 400°F. Position an oven rack to the upper third of the oven. Line a standard muffin tin with paper liners.
02 -
In a large bowl, whisk together the flour, granulated sugar, brown sugar, salt, and baking powder. Set aside.
03 -
In a liquid measuring cup, beat together the buttermilk, melted butter, eggs, and vanilla extract (if using). Pour into the dry ingredients and stir until only a few streaks of flour remain.
04 -
Stir in any desired add-ins, such as fruit or chocolate chips.
05 -
If time permits, cover the muffin batter and allow it to rest in the fridge for 1 hour or overnight. This will produce more moist, tender, and tall muffins.
06 -
Divide the batter evenly among the muffin tin cups. Sprinkle each with coarse sugar, if desired.
07 -
Bake until golden brown, and a toothpick inserted in the center comes out clean, about 16 to 18 minutes.