Get ready. Preheat the oven to 350°F. Line a 9x13" pan with parchment paper.
Melt the butter. Melt the butter in a saucepand or in the microwave, and set aside.
Beat the eggs and the sugar together ultil they are light and fluffy.
Add in the vanilla and mix.
Combine the dry ingredients. Combine the flour, salt and the cocoa powder. Add the flour mixture to the eggs and mix to combine.
Add the melted butter and mix together until well combined.
Bake. Pour into a parchement lined baking pan. Bake for 30 to 35 minutes.
RECIPE TIPS
Recipe VariationsYou can add up to 2 cups of chips and or nuts to this recipe. Here are a few of my favorite combos.
Butterscotch Blondies "Butterscotch Brownies". Add 1 cup of butterscotch chips and 1 cup of chopped pecans.
Chocolate Chip Blondies. Add in 2 cups of chocolate chips. OR 1 cup of chocolate chips + 1 cup of pecans.
Peanut Butter Blondies. Add in 1 cup of creamy or crunchy peanut butter. You can also add in 1 cup of chocolate chips or drizzle melted chocolate over the tops after baking.
Expert Tips
Beating the sugar and the eggs. This step gives the blondies, and even brownies the signature crackly top. You can mix up this recipe in a bowl and not use a mixer but you will not get the crackly top. Take your time on this step and beat the eggs and sugar together for at least 5 to 10 minutes. You want the sugar to dissolve into the eggs and the mixture should be a light yellow color.
Melting the butter. When you use melted butter in baking you are encouraging a chewier and denser textured baked good.
Sugar ratios. Brown sugar contributes to the moistness of baked goods. The more brown sugar you use the more moist and dense your blondie bars will be.
Thicker BlondiesIf you want thicker blondies you can bake this recipe in an 8x8' baking pan. Just be mindful that they may need to bak a little longer. I use a probe thermometer (affiliate link)to check my baked goods and these should be about 195℉ when they are done. This will still give you a moist, gooey middle.