Instructions
Step 1: Prepare the Shortbread Base
Preheat oven to 350°F (175°C). Line a 9×13-inch baking dish with parchment paper, leaving overhang for easy removal. Cream together butter and powdered sugar until light and fluffy (2-3 minutes). Mix in vanilla extract. Gradually add flour and salt, mixing until a dough forms. Press dough evenly into prepared dish. Bake 18-20 minutes, or until edges are lightly golden. Let cool completely.
Step 2: Make the Caramel Layer
In a saucepan, combine sweetened condensed milk, butter, brown sugar, corn syrup, and salt. Cook over medium heat, stirring constantly, until it boils gently. Continue stirring for 6-8 minutes, until thickened and slightly darker. Pour caramel evenly over the cooled shortbread. Spread and cool completely.
Step 3: Add the Chocolate Topping
Melt chocolate chips and vegetable oil in a microwave-safe bowl in 30-second intervals, stirring until smooth. Pour melted chocolate over caramel, spreading evenly. Let set at room temperature (or chill to speed up the process).
Step 4: Slice and Serve
Once set, lift cookies from the dish using the parchment overhang. Slice into bars or squares and enjoy!
Cook’s Notes
- Stir caramel constantly to prevent burning. It should be thick but spreadable.
- Let chocolate set at room temperature to avoid condensation. If refrigerating, cover the dish.
- Ensure the shortbread is completely cool before adding caramel.
Variations
Dark Chocolate Twix Cookies:
Use dark chocolate chips for a richer flavor.
Salted Caramel Twix Cookies:
Sprinkle flaky sea salt over the caramel before adding chocolate.
Nutty Twix Cookies:
Add 1/2 cup chopped pecans or almonds to the caramel layer.
Serving Suggestions
- With coffee or tea
- With vanilla ice cream
- Decorated with sprinkles for holidays
Frequently Asked Questions
Can I make these ahead of time?
Yes! Make 2-3 days in advance. Store in an airtight container at room temperature.
How should I store leftovers?
Store in an airtight container at room temperature for up to 1 week, or refrigerate for a firmer texture.
Can I freeze these?
Yes! Wrap individually, then place in an airtight container or freezer bag. Freeze for up to 3 months. Thaw at room temperature.
Enjoy your delicious homemade Twix cookies! Let us know how yours turned out in the comments!