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#### **Step 1: Prepare the Base**
Start by preheating your oven to **350°F (175°C)**. Line a 9×9-inch baking pan with parchment paper or lightly grease it with butter or cooking spray. This will make it easier to remove the bars once they are baked.
In a large mixing bowl, combine the softened butter, granulated sugar, salt, and vanilla extract. Use a hand mixer or stand mixer to beat the mixture until it’s smooth and creamy. Gradually add the flour and continue mixing until the dough comes together and forms a soft, slightly crumbly texture.
#### **Step 2: Make the Caramel Layer**
While the base is cooling, you can prepare the caramel layer. In a medium saucepan, melt the butter over medium heat. Once the butter is melted, stir in the brown sugar, heavy cream, vanilla extract, and salt. Bring the mixture to a simmer, stirring constantly to prevent it from burning. Let the caramel simmer for about **3-5 minutes** until it thickens and becomes glossy. Be sure to keep stirring to avoid scorching.
Once the caramel has thickened, remove the saucepan from the heat and let it cool for a minute or two before pouring it over the partially baked crust. Use a spatula to spread it evenly across the base layer.
#### **Step 4: Bake the Bars**
Place the pan back into the oven and bake for an additional **15-20 minutes**, or until the caramel is bubbly and golden, and the nuts are lightly toasted. The bars will firm up as they cool, so don’t worry if the caramel seems a bit soft when you take them out of the oven.
For an extra touch, you can drizzle some melted chocolate over the top of the bars or sprinkle a little sea salt to enhance the caramel flavor.
– **Use Fresh Butter:** Using fresh, high-quality butter will make a noticeable difference in the flavor of the shortbread base and caramel layer.
– **Watch the Caramel:** When making the caramel, keep a close eye on it. It should simmer gently, but don’t let it boil too vigorously. Stir continuously to avoid burning.
– **Chill for Neat Slices:** For the neatest, cleanest cuts, you can refrigerate the bars for about an hour before slicing. This helps the caramel set properly and makes the bars easier to cut.
– **Nut Variations:** Feel free to experiment with different types of nuts. Walnuts, almonds, cashews, or hazelnuts all work wonderfully in this recipe. You can even use a mix of your favorites.
– **Make Ahead:** These bars store well and can be made a day or two in advance. Just keep them covered in an airtight container to maintain their freshness.
### **Serving Suggestions**
– **With a Cup of Coffee or Tea:** These bars are ideal for an afternoon treat alongside your favorite hot beverage.
– **Topped with Ice Cream:** For an indulgent dessert, serve a warm slice of the caramel nut bars with a scoop of vanilla ice cream or a dollop of whipped cream.
– **Gifting:** Wrapped in a cute box or tin, these bars make an excellent homemade gift for holidays or special occasions.
### **Conclusion**