Peanut Butter & Chocolate Shortbread Bars: A Decadent Delight

There’s something deeply nostalgic about peanut butter and chocolate. As a child, my grandmother would always have a stash of peanut butter cups, and sneaking one felt like a delicious rebellion. These Peanut Butter & Chocolate Shortbread Bars capture that same feeling of simple joy but elevate it with a sophisticated, buttery shortbread crust. It’s a treat that evokes childhood memories while satisfying even the most discerning adult palate.

Recipe Overview

• Prep Time: 30 minutes
• Cook Time: 40-45 minutes
• Total Time: 3 hours 30 minutes
• Yields: 4 dozen
• Dietary Type: Not Gluten-Free

Ingredients

For the Crust:

• 7 ounces unsalted butter, melted and cooled to just warm
• ½ cup granulated sugar
• ½ teaspoon table salt
• 2 cups unbleached all-purpose flour
• 2 tablespoons unbleached all-purpose flour
• ½ cup unsalted peanuts, finely chopped

For the Peanut Butter Filling:

• 1 cup creamy peanut butter (not natural but an emulsified variety such as Jif)
• 3 ounces unsalted butter, at room temperature
• 6 ounces confectioners sugar
• 1 teaspoon pure vanilla extract

For the Ganache:

• 5 ounces good-quality bittersweet chocolate, such as Lindt Excellence, chopped (about 1 cup)
• ½ cup plus 2 tablespoons heavy cream

Equipment Needed

• 13×9-inch straight-sided metal baking pan
• Aluminum foil
• Medium bowl
• Fork
• Stand mixer with paddle attachment
• Knife or metal offset spatula
• Small heatproof bowl
• Small saucepan
• Rubber spatula
• Cutting board

Instructions

1. Prepare the Pan: Line a straight-sided 13×9-inch metal baking pan with foil, letting the ends create an overhanging edge for easy removal. This “sling” will make it much easier to lift the finished bars out of the pan later.

2. Make the Shortbread Dough: In a medium bowl, stir together the melted butter, granulated sugar, and salt. Add the flour and chopped peanuts, stirring until a stiff dough forms. Don’t overmix; you want the shortbread to be tender, not tough.

3. Press and Chill the Crust: Press the mixture evenly into the bottom of the prepared pan. Use the back of a spoon or your fingers to ensure a smooth, uniform layer. Prick the dough all over with a fork. This prevents the crust from puffing up unevenly during baking. Refrigerate the pan for 30 minutes (or freeze for 5 to 7 minutes), until the dough is firm. Chilling the dough is crucial for preventing excessive spreading in the oven.

4. Bake the Crust: Meanwhile, position a rack near the center of the oven and heat the oven to 325°F. Bake the dough for 20 minutes, then decrease the oven temperature to 300°F and bake until the crust is golden-brown all over and completely set, 20 to 25 more minutes. Keep a close eye on the crust towards the end of the baking time to prevent burning. A slight browning is ideal.

5. Cool the Crust: Let the crust cool completely before topping. This is essential for preventing the peanut butter filling from melting.

6. Make the Peanut Butter Filling: Put the peanut butter and butter in the bowl of a stand mixer fitted with the paddle attachment and beat on medium speed until smooth, about 1 minute. Add about half of the confectioners’ sugar to the mixer along with the vanilla extract and 1 tablespoon of hot water. Beat on low speed until combined, then on medium speed until smooth and fluffy, about 1 more minute. Beat in the remaining sugar and mix, about 1 more minute, until the mixture is smooth and thick, like frosting. If the filling seems too stiff, add another 1 tablespoon of hot water and beat for another minute. Adjusting the water content is key to achieving the perfect consistency.

7. Spread the Filling: With a knife or metal offset spatula, spread the filling over the fully cooled crust. The filling may not spread smoothly and evenly, but don’t worry; the ganache will cover it. Focus on getting a consistent thickness across the surface.

8. Make the Ganache: Put the chocolate in a small heatproof bowl. In a small saucepan, bring the heavy cream to a boil. Remove from the heat and pour over the chocolate. Let sit for 3 minutes. This allows the heat from the cream to gently melt the chocolate. Stir gently with a rubber spatula until combined and smooth. Avoid over-stirring, which can cause the ganache to seize.

9. Spread the Ganache: Spread the ganache over the peanut-butter filling with a metal offset spatula to coat evenly. Work quickly while the ganache is still warm and fluid.

10. Set and Cut: Let the bars sit at least 3 hours to allow the ganache to set before cutting (or refrigerate for 1 hour). This is crucial for clean cuts.

11. Remove and Cut: Carefully lift the bars from the pan using the foil sides and transfer them to a cutting board. Separate the foil from the bars by sliding a spatula between them. Cut the bars into 1-1/2-inch squares. A warm knife can help achieve cleaner cuts, especially if the ganache is very firm.

Expert Tips & Tricks

• Toast the Peanuts: For an even more intense nutty flavor, lightly toast the chopped peanuts before adding them to the shortbread dough. Just be careful not to burn them.
• Use a Good Quality Chocolate: The quality of the bittersweet chocolate will greatly impact the flavor of the ganache. Opt for a chocolate with a cocoa percentage between 60% and 70% for the best balance of sweetness and bitterness.
• Salted Peanut Butter: For a bolder flavor, consider using salted peanut butter.
• Make Ahead: The shortbread crust can be baked a day in advance and stored in an airtight container at room temperature. This allows you to break up the preparation into more manageable steps.
• Adjust Sweetness: If you prefer a less sweet dessert, you can reduce the amount of confectioners’ sugar in the peanut butter filling.

Serving & Storage Suggestions

These Peanut Butter & Chocolate Shortbread Bars are perfect served as an afternoon treat, a decadent dessert, or even as a part of a holiday dessert platter. Serve them chilled or at room temperature. They pair wonderfully with a glass of cold milk, a cup of hot coffee, or even a sweet dessert wine.

Store leftover bars in an airtight container at room temperature for up to 3 days, in the refrigerator for up to a week, or in the freezer for up to a month. If freezing, wrap the bars individually in plastic wrap before placing them in a freezer-safe container. Let them thaw completely before serving.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	1604 kcal	N/A
Calories from Fat	1005 g	63%
Total Fat	111.8 g	171%
Saturated Fat	51.8 g	258%
Cholesterol	193.2 mg	64%
Sodium	609.9 mg	25%
Total Carbohydrate	135.2 g	45%
Dietary Fiber	6.6 g	26%
Sugars	73.7 g	294%
Protein	27 g	53%

Note: Nutritional information is an estimate and may vary based on specific ingredients and portion sizes.

Variations & Substitutions

• Gluten-Free: Substitute the all-purpose flour in the crust with a gluten-free all-purpose blend.
• Nut-Free: Replace the peanut butter with sunflower seed butter (sunbutter) and omit the chopped peanuts from the crust.
• Dark Chocolate: Use a dark chocolate with a higher cocoa percentage for a more intense chocolate flavor in the ganache.
• White Chocolate: For a sweeter option, use white chocolate in the ganache.

FAQs (Frequently Asked Questions)

Q: Can I use natural peanut butter?
A: While you can, emulsified peanut butter (like Jif) is recommended for the filling because it provides a smoother and more stable texture. Natural peanut butter tends to separate, which can affect the consistency of the filling.

Q: Can I make the ganache ahead of time?
A: It’s best to make the ganache right before you’re ready to spread it. If you make it too far in advance, it will harden and become difficult to work with.

Q: How do I get clean cuts?
A: Ensure the ganache is fully set before cutting. Use a warm, sharp knife and wipe it clean between each cut for the neatest results.

Q: Can I add other nuts to the crust?
A: Absolutely! You can substitute or add other chopped nuts, such as pecans, walnuts, or almonds, to the shortbread crust.

Q: The ganache is too thick. What can I do?
A: Gently warm the ganache in a double boiler or in the microwave in short bursts (10-15 seconds at a time), stirring frequently, until it thins out slightly. Be careful not to overheat it.

Final Thoughts

These Peanut Butter & Chocolate Shortbread Bars are a testament to the enduring power of simple flavors combined with a touch of elegance. The buttery shortbread, creamy peanut butter, and rich chocolate ganache create a truly irresistible treat. I encourage you to try this recipe and share your creations with friends and family. Don’t hesitate to experiment with variations to suit your own taste preferences. Happy baking!