13x9 Bar Cookies Recipe: Easy, Delicious Treats for Any Occasion

Bar cookies baked in a 13×9-inch pan are a classic, no-fuss treat perfect for parties, potlucks, or just satisfying a sweet craving at home. Their versatility allows for endless flavor combinations, and they’re easy to make in large batches, making them a go-to dessert for both beginners and experienced bakers alike.

Ingredients

1 cup unsalted butter, softened
1 ½ cups granulated sugar
2 large eggs
2 teaspoons vanilla extract
2 cups all-purpose flour
1 teaspoon baking powder
½ teaspoon salt
1 cup chocolate chips (optional)
½ cup chopped nuts (walnuts, pecans, or almonds, optional)
½ cup caramel or fruit preserves (optional, for filling)

Instructions

Preheat your oven to 350°F (175°C). Grease a 13×9-inch baking pan or line it with parchment paper for easy removal.
In a large mixing bowl, cream together the softened butter and granulated sugar using an electric mixer on medium speed until light and fluffy, about 2-3 minutes.

Add the eggs one at a time, beating well after each addition. Mix in the vanilla extract until combined.
In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add the dry ingredients to the wet mixture, mixing on low speed until just combined. Do not overmix, as this can make the cookies dense.
If desired, fold in chocolate chips and chopped nuts to the batter for added flavor and texture.

Pour the batter into the prepared pan and spread evenly with a spatula. If you’re using preserves or caramel, spread it evenly over the top or swirl it into the batter for a marbled effect.
Bake in the preheated oven for 25-30 minutes, or until the edges are golden and a toothpick inserted into the center comes out clean.
Allow the bars to cool in the pan for at least 15 minutes before cutting. For cleaner slices, transfer to a wire rack and cool completely before slicing into squares.

Tips

Use room temperature butter for easier creaming and a smoother batter.
If you prefer chewier bars, slightly underbake them, removing from the oven when a toothpick comes out with moist crumbs.
For a richer flavor, substitute some of the butter with cream cheese or add a splash of bourbon or coffee extract.

Storing in an airtight container at room temperature keeps these bars fresh for up to 3 days. For longer storage, refrigerate for up to a week or freeze for up to 3 months.

Serving Suggestions

Serve these bar cookies plain for a simple treat or dust with powdered sugar for a festive touch. They pair wonderfully with a glass of milk, a cup of coffee, or a scoop of vanilla ice cream for an indulgent dessert.

Variations

Peanut Butter Bars: Swirl peanut butter into the batter before baking or spread on top after baking.

Lemon Bars: Add 2 tablespoons of lemon zest and 2 tablespoons of lemon juice to the batter for a citrus twist.
Oatmeal Bars: Replace half of the flour with rolled oats for a chewy texture.
Caramel Pretzel Bars: Layer pretzels and caramel bits in the batter before baking for a salty-sweet flavor.

Storage and Reheating

Store the cooled bars in an airtight container at room temperature for up to 3 days. To keep them fresh longer, refrigerate for up to a week. Reheat individual bars in the microwave on medium power for 10-15 seconds to enjoy warm, gooey treats. For a more even heat, cover with a damp paper towel before microwaving.

Frequently Asked Questions

Can I use a different size pan?

Yes, but baking time may vary. If using a smaller or larger pan, adjust the baking time accordingly. A deeper pan may require more time, while a shallower one may need less. Keep an eye on the edges and test for doneness with a toothpick.

Can I make these bars gluten-free?

Absolutely. Substitute all-purpose flour with a gluten-free flour blend designed for baking. Be sure to check that your baking powder is gluten-free as well. The texture may vary slightly, but they will still be delicious.

Are these bars suitable for freezing?

Yes, they freeze well. Wrap individual bars tightly in plastic wrap and store in an airtight container or freezer bag for up to 3 months. Thaw at room temperature or reheat briefly in the microwave before serving.

How do I prevent the bars from sticking to the pan?

Greasing the pan thoroughly or lining it with parchment paper helps prevent sticking. If using parchment, leave some overhang for easy removal. Allow the bars to cool completely before slicing to ensure clean cuts.

Can I add fruit or other mix-ins?

Definitely. Fresh or dried fruits like berries, chopped apples, or dried cranberries can be folded into the batter. Just be mindful of moisture content to avoid soggy bars. Nuts, chocolate chips, and candies are also popular choices.

13×9 Bar Cookies Recipe: Easy, Delicious Treats for Any Occasion