01 - Preheat oven to 350°F. Line a 9x13-inch baking pan with parchment paper, allowing an overhang for easy removal.
02 - In a large bowl, beat together the softened butter, brown sugar, and granulated sugar until light and fluffy.
03 - Add eggs one at a time to the creamed mixture, beating well after each addition, then stir in vanilla extract.
04 - In a separate bowl, whisk together flour, baking soda, and salt; gradually mix into the wet ingredients until just combined.
05 - Fold semisweet chocolate chips into the dough evenly.
06 - Spread half of the dough evenly in the prepared pan, drizzle caramel sauce over it, then gently spread remaining dough on top to cover.
07 - Bake for 28 to 32 minutes, or until the top turns golden and a toothpick inserted in the center comes out with moist crumbs.
08 - Let bars cool completely in the pan on a wire rack before glazing.
09 - Whisk powdered sugar, milk, and vanilla extract until smooth; drizzle evenly over cooled bars.
10 - Once glaze has set, lift bars using the parchment overhang, cut into 12 squares, and serve.