These chewy, cinnamon-swirled Blondies are a buttery celebration of sweet vanilla and white chocolate. The top browns to a light golden color while the inside stays tender and moist, with pockets of melted white chocolate adding creamy sweetness. A cinnamon-sugar ribbon in the middle gives a warm, cozy lift that fills the kitchen with an irresistible aroma as they bake. They are perfect for potlucks, school lunches, after-dinner treats, or anytime you want an easy yet impressive bar cookie. If you love a little extra spice and crunch, you might also enjoy a related twist I experimented with in my sweet and spicy cinnamon sugar blondies post, which highlights an intensified cinnamon flavor. These Blondies are straightforward to make, travel well, and keep their chew for several days, making them a reliable dessert to keep on hand.

Ingredients

• 3/4 cup unsalted butter, softened,
  Provides richness and a tender crumb; soften to room temperature for easy creaming.
  Try a cinnamon-forward version if you want a spicier profile.

• 3/4 cup granulated sugar,
  Adds sweetness and helps with the chew and browning.

• 3/4 cup packed light brown sugar,
  Brings moisture and a subtle caramel note thanks to the molasses.

• 2 large eggs, room temperature,
  Bind the batter and add structure; room temperature eggs mix more evenly.

• 2 teaspoons pure vanilla extract,
  Enhances the sweet, buttery flavor and complements the white chocolate.

• 2 and 1/3 cups all-purpose flour,
  The base of the batter; measure by spooning into the cup and leveling for accuracy.

• 1 and 1/2 teaspoons baking powder,
  Gives a gentle lift so the bars are not too dense.

• 1/2 teaspoon cream of tartar,
  Helps with texture and a light tang.

• 1/2 teaspoon salt,
  Balances sweetness and enhances flavor.

• 1 cup white chocolate morsels,
  Stirred into the batter for pockets of creamy sweetness.

• 1 tablespoon white chocolate morsels (for topping),
  Scattered on top so a few chips melt lightly during baking.

• 1/4 cup granulated sugar (for cinnamon-sugar filling),
  Mixed with cinnamon to form the sweet ribbon in the center.

• 2 teaspoons ground cinnamon,
  Mixed with the 1/4 cup sugar for a warm, fragrant filling.

Step-by-step Instructions

1. Preheat your oven to 350°F (177°C) and line a 9-inch square baking pan with parchment paper. Make sure the paper hangs over two sides for easy removal.

2. In a large bowl, beat the softened butter, granulated sugar, and brown sugar together until fluffy, about 3 minutes. Scrape the bowl once so everything is evenly creamed.

3. Add the eggs and vanilla extract, beating until well combined. Beat just until smooth to avoid overmixing.

4. In another bowl, whisk together the flour, baking powder, cream of tartar, and salt. Whisking helps distribute the leavening evenly.

5. Gradually add the dry ingredients to the wet mixture and mix until just combined. Stop as soon as you cannot see flour for a tender texture.

6. Fold in the 1 cup white chocolate morsels. Use a spatula to distribute them without overworking the batter.

7. Press half of the dough into the prepared baking pan, spreading it into an even layer. Use slightly damp hands or a piece of parchment to press without sticking.

8. Mix the 1/4 cup granulated sugar and 2 teaspoons ground cinnamon in a small bowl, then sprinkle the cinnamon-sugar evenly over the dough in the pan.

9. Layer the remaining dough over the cinnamon-sugar filling, breaking it into pieces and pressing gently to cover the filling. It is okay if the top is slightly uneven.

10. Top with 1 tablespoon white chocolate morsels, then bake for 32 to 35 minutes until golden brown and a toothpick inserted in the center comes out with moist crumbs. Rotate the pan halfway through baking if your oven has hot spots.

11. Allow to cool completely in the pan before lifting out on the parchment and cutting into squares. Cooling helps the layers set so the bars slice cleanly.

Recipe Details

• Prep Time: 15 minutes
• Cook Time: 32 to 35 minutes
• Total Time: 47 to 50 minutes
• Servings: 16 squares
• Calories: Approximately 295 per serving

Tips, Storage & Variations

• Tips

  • Soften butter to room temperature but do not melt it; it should still hold shape when pressed.
  • Measure flour by spooning into the cup and leveling with a knife to avoid dense blondies.
  • If the top browns too quickly, tent loosely with foil for the last 5 to 10 minutes.

• Storage

  • Store cooled blondies in an airtight container at room temperature for up to 3 days.
  • For longer storage, keep in the refrigerator up to 7 days.

• Freezing

  • Wrap individual squares tightly in plastic wrap and place in a freezer-safe bag for up to 3 months. Thaw at room temperature before serving.

• Flavor variations using only the ingredients on hand

  • Extra white chocolate: Fold an extra 1 tablespoon of morsels into the batter for more pockets of white chocolate.
  • Stronger cinnamon ribbon: Increase the cinnamon in the filling by up to 1 teaspoon if you want a bolder swirl.
  • Double-topped chips: Scatter the full 1 cup plus the 1 tablespoon on top for an extra chocolaty top.

You might also enjoy another take on cinnamon-sugar bars in my related recipe for sweet and spicy cinnamon sugar blondies.

Frequently Asked Questions

1. How do I tell when blondies are done?
   A toothpick should come out with moist crumbs, not wet batter, and the top should be golden brown.

2. Can I use salted butter instead of unsalted?
   Yes, but reduce added salt slightly or omit if you prefer less saltiness.

3. Why did my blondies turn out dense?
   Likely due to overpacking flour or overmixing. Measure flour correctly and mix until just combined.

4. Can I make these in a different sized pan?
   Yes, but adjust baking time; a larger pan will bake faster and a smaller pan will take longer.

5. Can I prepare the batter ahead of time?
   You can refrigerate the unbaked pan for up to 24 hours, then bake directly from cold, adding a few extra minutes.

People Also Ask

1. What is the difference between blondies and brownies?
   Blondies use brown sugar and vanilla instead of cocoa, creating a butterscotch-like flavor rather than chocolate.

2. Can I reduce the sugar in this blondie recipe?
   You can reduce sugar a bit, but texture and browning will change; reduce by small amounts only.

3. Will white chocolate chips melt into the batter?
   White chocolate chips soften and create pockets of creamy sweetness but may not fully melt like a ganache.

4. How should I store blondies to keep them chewy?
   Keep them in an airtight container at room temperature to maintain chewiness for a few days.

5. Do blondies need refrigeration because of the eggs?
   No, at room temperature they are fine for a few days; refrigerate if your kitchen is very warm.

6. Can I double the recipe for a larger batch?
   Yes, use two pans and monitor baking time until a toothpick shows moist crumbs.

7. Is cream of tartar necessary in blondies?
   It helps texture and a slight tang, but omitting it will still produce good results.

8. Why swirl cinnamon sugar in the middle?
   The ribbon adds a bright, aromatic contrast that keeps the bars from tasting overly sweet throughout.

Conclusion

I hope these Blondies become a go-to in your baking rotation. They balance buttery richness, sweet white chocolate, and a warm cinnamon ribbon for a treat that is simple to make and satisfying to share. For another beloved version to compare techniques and variations, check out The Best Blondie Recipe – Sugar Spun Run and Classic Blondies – Simply Recipes. If you try this recipe, please share how they turned out and any small tweaks you made, and enjoy a cozy square with a cup of tea or coffee.