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The Best Chewy Cinnamon Sugar Blondies: A Tested Homemade Recipe

A close-up shot of baked, sliced chewy Cinnamon Sugar Blondies with a visible cinnamon swirl.

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This is a tested, reliable recipe for chewy Cinnamon Sugar Blondies featuring a rich brown sugar base and a delightful swirled cinnamon-sugar topping, perfect for any occasion.

Ingredients

Scale

1 cup (2 sticks) unsalted butter, melted

1 ½ cups packed light brown sugar

2 large eggs, room temperature

1 large egg yolk, room temperature

2 teaspoons pure vanilla extract

1 ¾ cups all-purpose flour

1 teaspoon baking powder

½ teaspoon salt

2 tablespoons granulated sugar (for topping)

2 teaspoons ground cinnamon (for topping)

Instructions

1. Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, allowing an overhang for easy removal.

2. In a large bowl, whisk the melted butter and brown sugar vigorously for about 30 seconds until fully combined. Whisk in the eggs and the extra egg yolk one at a time until just combined, followed by the vanilla extract.

3. In a separate bowl, whisk together the flour, baking powder, and salt. Gently fold the dry ingredients into the wet mixture using a spatula until only a few streaks of flour remain. Do not overmix.

4. In a small bowl, combine the 2 tablespoons of granulated sugar and 2 teaspoons of ground cinnamon. Spread half of the blondie batter into the prepared pan. Sprinkle half of the cinnamon-sugar mixture evenly over the batter. Gently dollop the remaining batter over the cinnamon sugar layer and spread it carefully. Sprinkle the remaining cinnamon sugar on top, then gently swirl the top layer with a toothpick.

5. Bake for 28–32 minutes, or until the edges are set and the center looks slightly under-baked. A toothpick inserted into the center should come out with moist crumbs attached. Let the blondies cool completely in the pan (2+ hours) before lifting and cutting into squares.

Notes

Use melted butter for the chewiest texture.

Do not overbake—the center should look slightly soft when removed.

Store leftovers in an airtight container for up to 4 days.

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