Kitchen Sink Cookie Bars

  4.7 – 3 reviews  
Sink your teeth into these Kitchen Sink Cookie Bars using whatever mix-ins you’ve got in the cupboard.
Level: Easy
Total: 1 hr 30 min
Active: 15 min
Yield: 12

Ingredients

  1. Nonstick cooking spray, for the baking pan
  2. 1 cup (227 grams) unsalted butter, at room temperature
  3. 2 1/4 cup (293 grams) all-purpose flour
  4. 2 teaspoons (6 grams) cornstarch
  5. 1 1/2 teaspoons (4 grams) baking powder
  6. 3/4 teaspoon (3 grams) kosher salt
  7. 1 cup (200 grams) packed brown sugar
  8. 1/2 cup (100 grams) granulated sugar
  9. 2 large eggs, at room temperature
  10. 2 teaspoons (10 milliliters) vanilla extract
  11. 2 cups (500 milliliters) mix-ins, such as crushed mini pretzels, crumbled cookies, chopped chocolate bars, nuts, toffee bits or chocolate chips
  12. Flaky sea salt

Instructions

  1. Heat your oven to 325 degrees F. Grease a 9-inch square baking pan with nonstick cooking spray and line it with a sling of parchment paper. 


  2. Melt the butter in a small pot over medium heat. If desired, you can brown the butter by simmering the butter, stirring frequently, until golden brown flecks appear, 5 to 7 minutes. Whether using melted butter or brown butter, immediately transfer it to a large bowl and set aside to cool slightly.
  3. Meanwhile, whisk together the flour, cornstarch, baking powder and kosher salt and set aside.
  4. When the butter has cooled slightly, beat in the brown sugar and granulated sugar until well combined. Beat in the eggs, one at a time, and stir in the vanilla. Add the dry ingredients into the butter mixture and mix until almost combined. Scatter in most of the mix-ins and stir just until evenly distributed. 
  5. Spread the batter into the prepared baking pan and scatter over the remaining mix-ins as well as a pinch of flaky sea salt. Bake until the edges are golden brown and the middle is set, 30 to 35 minutes. Allow the cookie bars to cool slightly in the pan before lifting out and slicing into 12 equal bars. The cookie bars will keep covered on the counter for up to 5 days.

Nutrition Facts

Serving Size 1 of 12 servings
Calories 494
Total Fat 27 g
Saturated Fat 15 g
Carbohydrates 64 g
Dietary Fiber 2 g
Sugar 41 g
Protein 5 g
Cholesterol 72 mg
Sodium 256 mg

Reviews

Erin Wilson
These were delicious! I found that my pretzel sticks did not remain crisp in the baking process, they were a bit rubbery so I’ll opt to leave those out next time. I also used a mixture of chocolate, butterscotch, and peanut butter morsels. Last tweak was I used pistachios and pecans since that’s what I had available!
Michelle Harmon
I’ve made these several times now, bars are too big so I cut smaller squares, easy and very good!
Curtis Miles
Great for kiddos coming /going to sports activities. I just used dark chocolate chunks and toasted walnuts as additions. Added some ground flaxseeds that don’t seem to change the texture or flavor.

 

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