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Chocolate chip cookie blondie bars with fudgy middles showing in a stack of four bars.

Chocolate Chip Cookie Bars (Blondies)

My go-to recipe for soft, chewy, and thick chocolate chip bars.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
YIELD 1 9x13-inch pan (read notes for smaller batch)
Author Stephanie @ Pretty.Simple.Sweet.

Ingredients

  • 1 ¾ cups (250 g/8.8 oz) all-purpose flour
  • ¾ teaspoon baking powder
  • ¼ teaspoon baking soda
  • ½ teaspoon salt
  • 1 ½ sticks (170 g) unsalted butter, melted or browned and slightly cooled
  • ½ cup (100 g/3.5 oz) granulated sugar
  • 1 cup (200 g/7 oz) light brown sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 1 ½ cups (250 g/9 oz) chocolate chips

Instructions

  1. Preheat oven to 350℉/175℃. Line a 9×13-inch pan with parchment paper, leaving enough overhang on the sides for lifting the bars out of the pan after baking.

  2. In a medium bowl, sift together flour, baking powder, baking soda, and salt. Set aside.

  3. In a large bowl, place the melted butter, granulated sugar, and brown sugar. Whisk until well combined. Whisk in the egg and vanilla extract.

  4. Add flour mixture and fold, using a rubber spatula or wooden spoon, just until combined. Do not over mix. Fold in chocolate chips.

  5. Spread dough evenly into prepared pan and smooth the top. Bake for about 25 minutes, until the top is golden brown, slightly firm to touch, and the edges start to pull away from the sides of the pan. The bars should appear soft but will set once cooled; over-baking will make them dry. Allow to cool to room temperature on a wire rack, then lift out of the pan and cut into squares.

Recipe Notes

- If you’d like to add nuts, reduce chocolate chips to 1 cup and add ¾ cup nuts. Walnuts, pecans, or hazelnuts are great.
- For a smaller batch: Cut the recipe in half, use an 8x8-inch pan, and bake for 20-25 minutes.
- Sprinkle bars with fleur de sel or coarse sea salt for sweet and salty bars.

Serving & Storing

  • Serve warm or at room temperature.
  • Store bars in an airtight container at room temperature for up to 3 days, or freeze for up to 2 months.