Chocolate Chip Muffins

Instructions:
* Preheat oven to 350°F (175°C). Grease a muffin tin.
* In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
* In a separate bowl, combine melted butter, egg, milk, and vanilla extract.
* Gradually add wet ingredients to dry ingredients, mixing until just combined.
* Stir in chocolate chips.
* Fill muffin cups with batter.
* Bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
* Let cool in pan for 5 minutes before transferring to a wire rack to cool completely.
Enjoy your delicious chocolate chip muffins!