Twix-Inspired Chocolate Caramel Bars

The smell of buttery shortbread baking always pulls me back to my college apartment kitchen where I first tried recreating my favorite candy bar from scratch.

I brought a batch to a friends movie night expecting polite nibbles but watched the whole plate disappear before the opening credits even rolled.

Ingredients

• 1 cup (225 g) unsalted butter softened: Room temperature butter incorporates evenly into the shortbread creating that tender melt in your mouth foundation
• 1/2 cup (100 g) granulated sugar: Just enough sweetness to let the butter shine without making the base cloying
• 2 cups (250 g) all purpose flour: The structure holder for your shortbread layer
• 1/4 tsp fine sea salt: Balances the sweetness and enhances the butter flavor
• 1 cup (225 g) unsalted butter: The backbone of a proper caramel sauce that sets up perfectly
• 1 cup (200 g) packed light brown sugar: Gives caramel its deep golden color and molasses notes
• 4 tbsp (60 ml) light corn syrup or golden syrup: Prevents crystallization so your caramel stays smooth and glossy
• 2 (14 oz / 397 g) cans sweetened condensed milk: Creates that creamy chewy candy like texture we love
• 1/4 tsp fine sea salt: A crucial pinch to keep caramel from tasting one note sweet
• 10 oz (285 g) milk chocolate chopped or chips: The classic finish but quality chocolate makes all the difference
• 1 tbsp (15 g) unsalted butter: Helps the chocolate set with a beautiful shine and prevents streaking

Instructions

Get your space ready:

Preheat oven to 350°F (175°C) and line a 9x13-inch pan with parchment letting the paper hang over two opposite sides like handles

Build the base:

Cream butter and sugar until fluffy then fold in flour and salt until dough just comes together

Bake to golden:

Press dough into your prepared pan prick all over with a fork and bake 18 to 20 minutes until lightly golden

Stir up caramel magic:

Melt butter in a heavy saucepan then add brown sugar corn syrup condensed milk and salt stirring constantly as it bubbles

Watch it transform:

Cook 7 to 10 minutes until thickened and amber colored hitting 225°F if you have a thermometer

Layer it on:

Pour hot caramel over the completely cooled shortbread and spread smooth then let it set for an hour until firm

Melt the topping:

Combine chocolate and butter in a heatproof bowl over simmering water stirring until glossy and fluid

Finish strong:

Pour chocolate over caramel spread evenly and let set before lifting the whole block out and cutting into 16 clean bars

Save

My dad now requests these for his birthday instead of cake calling them better than anything he can buy at the store.

The Perfect Shortbread Secret

Pressing the dough into the pan with the back of a measuring cup creates an even layer that bakes uniformly without thin spots that might burn.

Caramel Temperature Matters

That 225°F target is the sweet spot where caramel thickens enough to hold its shape but still yields smoothly when you bite through it.

Cutting Clean Bars

Run your knife under hot water and wipe it clean between each cut for those professional looking edges that make these bars gift worthy.

• Chill the finished bars for 15 minutes before cutting for the cleanest slices
• Use a sharp chefs knife not a serrated one
• Cut straight down without sawing motions

Save

These bars keep surprisingly well in a sealed container though in my house they rarely last more than two days anyway.

Recipe FAQs

→ How long do these bars need to set?

The caramel layer needs about 1 hour to set at room temperature before adding the chocolate. The final chocolate layer sets in about 30 minutes at room temperature or faster if refrigerated. For cleanest cutting, refrigerate the fully assembled bars for 1-2 hours before slicing.

→ Can I make these ahead of time?

Absolutely. These bars actually improve after a day as the flavors meld. Store in an airtight container at room temperature for up to 5 days. Layer between parchment paper to prevent sticking. They can also be frozen for up to 3 months, though the texture may be slightly less crisp after thawing.

→ What's the best way to cut clean bars?

Use a sharp knife warmed under hot water and wiped dry between cuts. The parchment overhang makes lifting the entire slab out easy. Score the chocolate layer lightly before pressing through completely. For the cleanest edges, let the bars firm up in the refrigerator for an hour before cutting.

→ Can I substitute dark chocolate?

Yes, dark chocolate works beautifully and creates a less sweet finish that many prefer. Semi-sweet chocolate is another option. The key is melting it gently with a bit of butter to maintain that smooth, glossy finish and prevent seizing during the melting process.

→ Why is my caramel grainy?

Grainy caramel usually results from sugar crystals forming during cooking. Stir constantly and ensure all sugar dissolves completely before the mixture boils. Using corn syrup or golden syrup helps prevent crystallization. If graininess occurs, gently reheat and stir until smooth—the texture usually improves upon cooling.

→ Can I make these without corn syrup?

Golden syrup is an excellent substitute for corn syrup with a slightly different flavor profile. Honey or maple syrup can work but will impart distinct flavors. The syrup's primary role is preventing sugar crystallization, so some form of inverted sugar is recommended for best results.