Blondies


Prep Time: 10 minutes
Cook Time: 32–36 minutes
Total Time: 42–46 minutes
Servings: 16 bars
Category: Dessert

Ingredients

  • 1¾ cups (210g) all-purpose flour
  • 1 teaspoon baking powder
  • ¼ teaspoon baking soda
  • 2 teaspoons cornstarch, optional *chewier
  • ¾ teaspoon salt
  • 1 cup (220g) packed light brown sugar
  • ½ cup (113g) unsalted butter, melted
  • 1 large egg, room temperature
  • 2 teaspoons vanilla extract
  • 1 cup (180g) mix-ins, such as: White chocolate chips, Semi-sweet chocolate chips, Butterscotch chips, Chopped nuts

Instructions

  1. Preheat the oven to 350°F. Line an 8×8-inch baking pan with parchment paper or foil, leaving about a 2-inch overhang on at least two sides.
  2. In a medium bowl, whisk together the flour, baking powder, baking soda, cornstarch and salt.
  3. In a large mixing bowl, whisk together the brown sugar and melted butter. Add the egg and vanilla and whisk vigorously until the mixture is thick and well combined.
  4. Add the dry ingredients to the wet ingredients and stir with a spatula until almost combined.
  5. Add ¾ cup of the mix-ins and stir until evenly distributed.
  6. Transfer the dough to the prepared baking pan and spread into an even layer.
  7. Press the remaining ¼ cup of mix-ins into the top.
  8. Bake for 32–36 minutes, or until the edges are set and golden brown and a toothpick inserted into the center comes out clean.
  9. Let the cookie bars cool completely in the pan before lifting them out and cutting into squares.

Jessica’s Notes

Best Served With

  • A scoop of vanilla ice cream
  • A drizzle of caramel or chocolate sauce

Prep Ahead

  • The cookie bar dough can be prepared, covered, and refrigerated for up to 24 hours before baking.
  • Allow refrigerated dough to sit at room temperature for about 15–20 minutes before spreading into the pan.

Storage

  • Store cooled cookie bars in an airtight container at room temperature for up to 4–5 days.
  • For the softest texture, place parchment between layers if stacking.

Freezer-Friendly

  • Freeze baked cookie bars in an airtight container or freezer bag for up to 3 months.
  • Thaw at room temperature before serving.

Variations

  • Add ½ teaspoon cinnamon for a warm, spiced flavor.
  • Sprinkle a little flaky sea salt over the top before baking for a sweet-and-salty version.

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