Instructions:

Prepare the Cookie Dough: Preheat your oven to 350°F (175°C). In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy. Beat in the eggs one at a time, then add the vanilla extract. In another bowl, whisk together the flour, baking powder, baking soda, and salt. Gradually mix the dry ingredients into the wet ingredients until just combined.
Form the Cookies: Scoop out tablespoon-sized portions of dough and flatten them slightly with your hand. Place them on a baking sheet lined with parchment paper. Bake for 10-12 minutes, or until the edges are golden brown. Allow the cookies to cool completely on a wire rack.
Add the Filling: Once the cookies have cooled, spread a layer of caramel sauce over each cookie. Sprinkle chopped Twix bars on top of the caramel layer.
Prepare the Topping: In a small bowl, melt the chocolate chips with the vegetable oil in the microwave in 30-second intervals, stirring until smooth. Drizzle the melted chocolate over the caramel and Twix-covered cookies.
Set and Serve: Allow the chocolate to set completely before serving. For best results, let the cookies sit for at least an hour to let the flavors meld together.
Tips:

Cooling: Ensure cookies are completely cooled before adding caramel to prevent melting or sogginess.
Caramel Sauce: If using homemade caramel, let it cool slightly before spreading to avoid melting the cookies.
Twix Bars: Chop the Twix bars into small, uniform pieces to ensure even distribution on the cookies.
Chocolate Drizzle: For a smoother chocolate drizzle, add a little vegetable oil to the chocolate chips to achieve the desired consistency.
Enjoy these Twix Cookies, a delightful combination of chewy caramel, crunchy Twix bars, and rich chocolate, perfect for satisfying your sweet tooth!