Preheat the Oven: Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper or aluminum foil, greasing lightly with cooking spray.
Mix Wet Ingredients: In a large bowl, beat together melted butter, brown sugar, and granulated sugar until light and fluffy. Add eggs, one at a time, mixing well after each addition. Stir in the vanilla extract.
Add Dry Ingredients: In a separate bowl, whisk together flour, baking soda, and salt. Gradually add this mixture to the wet ingredients, stirring until just combined.
Add Chocolate Chips: Gently fold in the chocolate chips, making sure they’re evenly distributed.
Press Dough into Pan: Transfer the dough into the prepared baking pan, pressing it evenly into all corners.
Bake: Bake for 20-25 minutes, or until the edges are golden and the center is set but still slightly soft. Check with a toothpick; it should come out with a few moist crumbs.
Cool and Slice: Let the bars cool in the pan for 10 minutes. Then, lift them out using the parchment paper or foil and transfer to a wire rack to cool completely. Slice into squares or rectangles.
