Step 1: Prepare Your Pan
Start by preheating your oven to 350°F (175°C). Line a 9x13 inch baking pan with parchment paper, allowing some overhang on the sides for easy removal later. This will also help prevent sticking.
Step 2: Mix the Wet Ingredients
In a large mixing bowl, combine the melted butter, brown sugar, and granulated sugar. Whisk together until smooth. Then, add in the eggs and egg yolk, followed by the vanilla extract. Mix until everything is well combined.
Step 3: Combine the Dry Ingredients
In another bowl, whisk together the all-purpose flour, corn starch, baking powder, and salt. This step ensures your blondies will have the right texture and rise.
Step 4: Combine Wet and Dry Mixtures
Gradually add the dry ingredients to the wet mixture. Use a rubber spatula to fold the ingredients together gently, being careful not to overmix. This will keep your blondies chewy.
Step 5: Fold in the Chocolate Chips
Once the batter is just combined, fold in your choice of chocolate chips. This is where you can get creative! Use a mix of your favorites for a unique flavor explosion.
Step 6: Bake
Pour the batter into your prepared baking pan and spread it evenly. Bake in your preheated oven for 20-25 minutes, or until the edges are lightly golden and the center is set but still soft. A toothpick inserted into the center should come out with a few moist crumbs.
Step 7: Cool and Serve
Allow the blondies to cool in the pan for about 10 minutes, then lift them out using the parchment paper overhang. Transfer to a wire rack to cool completely before cutting into squares. Enjoy the aroma wafting through your kitchen!
