01 - Preheat oven to 375°F. Line a 12-cup muffin tin with paper liners or grease well.
02 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
03 - In a separate bowl, whisk milk, oil or melted butter, eggs, and vanilla extract until blended.
04 - Add wet ingredients to dry ingredients and stir gently until just combined; avoid overmixing.
05 - Fold in most chocolate chips, reserving a few to sprinkle on top.
06 - Distribute batter evenly into muffin cups, filling each about three-quarters full. Sprinkle reserved chocolate chips on top.
07 - Bake for 18 to 20 minutes or until a toothpick inserted in the center comes out clean with slight melted streaks.
08 - Let muffins cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.