The BEST Blondie Recipe
This blondie recipe is chewy, rich, and studded with white chocolate chips! They have the same texture as brownies, but are flavored with vanilla rather than chocolate. This is an easy, one-bowl recipe that’s perfect for weeknight baking!
*Post and pictures updated October 2022*
What Is a Blondie?
If you’ve never tried blondie bars before, you’re in for a real treat! They’re essentially “blonde brownies,” aka brownies that are vanilla flavored rather than chocolatey.
This blondie recipe delivers the same fudgy texture of classic brownies, just with a strong vanilla flavor. I even managed to recreate the same crackly top that brownies have!
You can make this easy blondie recipe any time of year, for any occasion. The blondies can be customized with any mix-ins you’d like as well!
Ingredients for This Recipe
This truly is the best recipe for blondies, both because the flavor and texture is spot on, but also because the ingredients list is minimal and everything can be whisked together in one bowl!
I’ve given detailed instructions and measurements in the recipe card at the end of this post, but here’s an overview of the key ingredients needed for this recipe:
- Unsalted Butter: As always, it’s best to stick with unsalted butter in your recipes so that you can control the amount of salt. If you only have salted butter on hand, then just reduce the salt to 1/8 teaspoon or a tiny pinch.
- Brown & Granulated Sugar: I love to use a mix of sugars in these blondies. The brown sugar adds flavor, moisture, and makes these bars chewier.
- Flour: When measuring your flour, make sure to use the spoon and level method. This will ensure that they end up dense like a blondie should be and not too cakey.
- Baking Powder: I don’t use any baking powder in my classic brownies, but I do in these blondies. It adds a little lift, but not too much.
- White Chocolate Chips: An optional mix-in, but I love the flavor and texture they add to the bars. If desired, you can swap out the white chocolate chips for another baking chip.
How to Make Blondies
I love that the batter for this blondie recipe comes together in one bowl. The fewer dishes I have to clean after baking, the better! Let’s quickly go over how this recipe comes together:
- Prep the baking pan: Preheat the oven to 350°F and line a 9×13-inch baking pan with parchment paper. I prefer leaving a bit of overhang to make removing the bars easier.
- Whisk together the wet ingredients: Combine the melted butter and both types of sugar in a large mixing bowl, then whisk in the eggs and vanilla extract.
- Add the dry ingredients: In the same bowl, add the flour, baking powder, and salt, followed by the white chocolate chips.
- Bake the blondies: Scoop the batter into the prepared pan and spread it into an even layer. Bake until the top is set and lightly browned.
- Cool completely: Remove the bars from the oven and transfer to a wire rack to cool completely. The bars need time to set up before they can be sliced!
You can easily swap out the white chocolate chips for your favorite mix-ins. Here are a few variations you can try:
- Chocolate Chip: Use 1 cup semi-sweet, milk, or dark chocolate chips
- Butterscotch: Use 1 cup butterscotch baking chips
- Peanut Butter: Use 1 cup peanut butter baking chips
- Chocolate Pecan: Use 3/4 cup of your favorite chocolate chips and 3/4 cup chopped pecans
- M&M Chocolate Chip: Use 3/4 cup semi-sweet chocolate chips and 3/4 cup M&M’s candies
Should This Recipe Be Made in a Glass or Metal Baking Dish?
Either will work! If using a glass pan, you shouldn’t have to increase the bake time of these blondies at all. I’ve made this recipe in a glass 9×13-inch pan a few times and never had any issues.
If using a metal pan, I recommend choosing a light metal pan rather than a dark one. Light metal pans reflect heat whereas dark metal pans tend to absorb it, which can cause the edges of your blondies to brown more quickly (and possibly burn them).
What Causes Blondies to Sink in the Middle?
If your blondies look perfect around the edges but the middle sunk down after being pulled from the oven, it could be for a couple of reasons.
- Over mixing the eggs: If you over mix the eggs, that can incorporate more air into the batter and cause them to sink.
- Underbaking the bars: Pulling the blondies out of the oven before the center has had time to bake through can also cause them to sink in the middle. Try baking them for a couple extra minutes next time!
Can This Recipe Be Made in Advance?
Absolutely! I don’t recommend making the batter in advance (i.e. preparing the batter and then refrigerating it to bake at a later date). However, you can certainly bake the bars to enjoy throughout the week!
Can This Blondie Recipe Be Halved?
Yes, you can halve the ingredients and bake the blondies in an 8×8-inch pan. The bake time should remain roughly the same, but use your best judgement!
- Be sure to line your baking pan with parchment paper or aluminum foil. Leave some overhang to make removing the blondies from the pan easier.
- Spoon and level the flour when measuring it; do NOT scoop the flour straight from the bag with your measuring cup. This will compact the flour, causing you to measure out too much by mistake.
- Let the melted butter cool for a couple of minutes before adding it to the mixing bowl. If the butter is still piping hot when you stir it in, you may end up scrambling the eggs!
More Easy Dessert Bar Recipes to Try!
- ¾ cup unsalted butter melted and slightly cooled (170 grams)
- 1 cup packed light brown sugar (200 grams)
- ¾ cup granulated sugar (150 grams)
- 2 large eggs at room temperature
- 2 teaspoons pure vanilla extract
- 2 cups all-purpose flour spooned & leveled (250 grams)
- 1 teaspoon baking powder
- ½ teaspoon salt
- 1 cup white chocolate chips optional (190 grams)
- Preheat the oven to 350°F (177°C). Line a 9x13-inch baking pan with parchment paper or aluminum foil, leaving some overhang for easy removal, and set aside.
- In a large mixing bowl, whisk together the melted butter, brown sugar, and granulated sugar until well combined. Whisk in the eggs and vanilla extract until fully combined.
- Add the flour, baking powder, and salt and mix until just combined, then fold in the white chocolate chips.
- Scoop the batter into the prepared 9x13 pan and spread it around into one even layer.
- Bake for 28 to 32 minutes or until the top is set and lightly browned. Remove from the oven and transfer the pan to a wire rack to cool completely before slicing into bars.