The BEST Blondie Recipe

Instructions

1. 1

   Preheat the oven to 350°F. Lightly grease a 13 x 9-inch baking pan and line it with parchment paper; set aside.

2. 2

   In a large bowl, combine 1 cup unsalted butter (melted and cooled slightly), 1 ⅔ cups brown sugar (packed), and ⅔ cup granulated sugar. Stir until smooth and combined.

3. 3

   Add 2 eggs and 1 egg yolk (both at room temperature) and 1 tablespoon vanilla extract to the bowl. Stir until the eggs are fully incorporated and the mixture is uniform.

4. 4

   In a separate bowl, whisk together 2 ¼ cups all purpose flour (spooned and leveled), 2 tablespoons corn starch, 1 teaspoon baking powder, and 1 teaspoon salt to evenly distribute the dry ingredients.

5. 5

   Add the dry ingredients to the wet ingredients and stir just until combined—mix only until no large streaks of flour remain to avoid overmixing.

6. 6

   Fold in 1 cup butterscotch, peanut butter, semi-sweet, or white chocolate chips (your choice) until evenly distributed.

7. 7

   Transfer the batter to the prepared baking pan and spread it into an even layer with a spatula.

8. 8

   Bake for 22 to 27 minutes, checking near the edge with a toothpick; the blondies are done when a toothpick inserted near the edge comes out with just a few moist crumbs.

   22 min
9. 9

   Allow the blondies to cool completely in the pan on a wire rack before lifting out (using the parchment) and cutting into bars.