Preheat the oven to 350°F. Grease an 8-inch square baking pan.
In a large bowl, cream together the butter and sugars until light and fluffy. Beat in the egg and vanilla until well combined.
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Spread the dough into the prepared baking pan. Sprinkle the chocolate chips over the top and press them lightly into the dough.
Bake for 25-30 minutes, or until the edges are lightly browned. Let cool before cutting into bars.
Interesting Facts
These bars are a great way to use up extra chocolate chips.
You can substitute different types of chips for the semi-sweet chips if you like.
These bars can be stored in an airtight container for up to a week.