10x15 Bar Cookies Recipe for Delicious Treats

Bar cookies are the perfect treat for those who want a sweet, satisfying dessert that’s easy to make and serve. The 10×15 bar cookies recipe offers a generous pan size, ideal for family gatherings, parties, or simply satisfying a sweet tooth. With a rich buttery crust and a gooey, chocolatey topping, this recipe hits all the right notes for a crowd-pleasing dessert that’s both simple and delicious.

Ingredients

1 cup (226 grams) unsalted butter, softened
1 cup (200 grams) granulated sugar
2 large eggs
2 teaspoons vanilla extract
2 cups (240 grams) all-purpose flour
1/2 teaspoon salt
1 cup (170 grams) semi-sweet chocolate chips
1/2 cup (60 grams) chopped nuts (optional, such as walnuts or pecans)
1 cup (170 grams) sweetened condensed milk
1 teaspoon vanilla extract (for topping)

Instructions

Preheat your oven to 350°F (175°C). Line a 10×15-inch (25×38 cm) baking pan with parchment paper, leaving a slight overhang for easy removal.

In a large mixing bowl, cream together the softened butter and granulated sugar using an electric mixer on medium speed until the mixture is light and fluffy, about 2-3 minutes.
Add eggs one at a time, beating well after each addition. Stir in the vanilla extract.
In a separate bowl, whisk together the all-purpose flour and salt. Gradually add this to the wet ingredients, mixing on low speed until just combined. Do not overmix.

Pour the batter into the prepared baking pan and spread evenly with a spatula. Bake in the preheated oven for 15-18 minutes, or until the edges are golden and a toothpick inserted into the center comes out clean.
While the crust is baking, prepare the topping. In a small saucepan over low heat, combine the sweetened condensed milk, vanilla extract, and chocolate chips. Stir continuously until the chocolate chips are fully melted and the mixture is smooth.
Remove the baked crust from the oven and immediately pour the chocolate mixture evenly over it. If using, sprinkle chopped nuts on top for added texture and flavor.

Return the pan to the oven and bake for an additional 10 minutes, or until the topping is set and slightly glossy.
Remove from the oven and allow to cool completely in the pan on a wire rack. Once cooled, use the parchment overhang to lift the entire sheet out of the pan. Cut into 10 rows by 15 columns for a total of 150 bars.
Serve immediately or store for later. For best results, keep at room temperature for up to 3 days or refrigerate for up to 1 week.

Tips

For a richer flavor, consider adding a pinch of sea salt to the crust or topping.
If you prefer a softer, chewier cookie bar, slightly underbake by a minute or two.
To make the bars more decadent, swap semi-sweet chocolate chips for dark or milk chocolate, or add caramel bits to the topping.

Store the bars in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate and bring to room temperature before serving for optimal texture.

Serving Suggestions

These bar cookies are versatile and perfect for serving at casual gatherings, picnics, or afternoon tea. Pair them with a glass of cold milk, a cup of coffee, or a hot chocolate for a comforting treat. For an elegant presentation, dust with a light sprinkle of powdered sugar or drizzle with melted white chocolate.

Variations

Experimenting with different flavors can elevate your bar cookies. Try adding a layer of peanut butter before pouring the chocolate topping for a peanut butter chocolate variation. Incorporate dried fruit, such as cranberries or chopped apricots, into the topping for a fruity twist. You can also substitute the chocolate chips with white chocolate or butterscotch chips for a different flavor profile. For a gluten-free version, use a gluten-free all-purpose flour blend, ensuring the rest of the ingredients are certified gluten-free.

Storage and Reheating

Stored properly, these bar cookies will stay fresh for up to 3 days at room temperature in an airtight container. For longer storage, refrigerate them for up to 1 week. To reheat, warm a single bar in the microwave for about 10-15 seconds until slightly softened, or enjoy them cold for a firmer texture. If you prefer warm bars, reheat in the microwave in short bursts, checking frequently to avoid overheating.

Frequently Asked Questions

Can I make these bars ahead of time?

Absolutely. You can prepare the crust and topping a day in advance. Assemble and bake the bars just before serving to ensure they stay fresh and gooey. Keep them stored in an airtight container at room temperature or refrigerated, depending on your preference.

Can I freeze these bar cookies?

Yes, these bars freeze well. Once cooled completely, wrap them tightly in plastic wrap and place in a freezer-safe container or zip-top bag. They can be frozen for up to 3 months. To serve, thaw at room temperature for about 30 minutes or reheat briefly in the microwave.

What if I don’t have a 10×15-inch pan?

If you don’t have that exact size, use the closest available baking dish and adjust baking times accordingly. A slightly smaller pan will result in thicker bars that may need a few extra minutes to bake through, while a larger pan will produce thinner bars that bake more quickly. Keep an eye on the edges to prevent overbaking.

Can I add other ingredients to customize the flavor?

Definitely. Mix-ins like chopped nuts, shredded coconut, or dried fruit can add texture and flavor. For a more decadent treat, swirl in caramel or peanut butter before baking. Just be mindful of the total moisture content to avoid soggy bars.

Are these bars suitable for gluten-free diets?

They can be, if you substitute the all-purpose flour with a certified gluten-free flour blend. Make sure all other ingredients, including chocolate chips and condensed milk, are gluten-free to ensure the bars are safe for those with gluten sensitivities.

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10×15 Bar Cookies Recipe for Delicious Treats