Step 1

Preheat oven to 400°F (200°F). Line 12 muffin cups with paper liners. In large bowl, whisk together flour, sugar, baking powder, baking soda and salt. Stir in chocolate chips; set aside.

Step 2

Whisk together buttermilk, melted butter, eggs and vanilla in separate bowl. Stir buttermilk mixture into flour mixture just until moistened. Divide batter evenly among prepared muffin cups.

Step 3

Bake for 18 to 20 minutes or until muffins are golden brown and toothpick inserted in center of muffin comes out clean. Transfer pan to rack; let cool for 10 minutes. Serve warm or let cool completely.