Cinnamon Roll Blondie Bars Recipe

These Cinnamon Roll Blondie Bars swirl a buttery cinnamon-sugar paste through soft blondie batter and finish with a sweet vanilla glaze. One bowl, one pan, no mixer required, and they taste like your favorite cinnamon roll without any yeast dough or waiting on a rise.

Cinnamon Roll Blondie Bars are a soft, buttery blondie swirled with a cinnamon-sugar filling and topped with a vanilla glaze. This recipe makes about 9 bars in an 8×8 pan, delivers a chewy center with a marbled cinnamon ribbon running through it, and is perfect for weekend baking, potlucks, or a lunchbox treat.

Here’s everything you need to make it perfectly.

I started making these Cinnamon Roll Blondie Bars on a Sunday when I wanted cinnamon rolls but didn’t want to deal with yeast and proofing time. Turns out the swirl step is the one that trips people up — you want spoonfuls of that cinnamon paste, not a thin drizzle, or it disappears into the batter instead of leaving those pretty ribbons. Once you nail that part, the rest is basically a one-bowl blondie recipe.

Why You’ll Love These Cinnamon Roll Blondie Bars

These bars have that dense, chewy blondie texture with a ribbon of cinnamon-brown sugar running through the middle and a glaze that sets just enough to hold its shape. They come together in one bowl with no mixer and no chilling time, which makes them a solid choice for a last-minute dessert bars craving.

And because they’re baked in a single pan and cut into squares, they’re easy to pack for a lunchbox or bring to a potluck without any fuss. If you like the flavor of a cinnamon roll but not the process, this recipe is the shortcut.

What Ingredients Do You Need for Cinnamon Roll Blondie Bars?

Ingredient Group	Ingredient	Amount	Notes
Blondie Base	Unsalted butter, melted	1/2 cup (1 stick)	—
Blondie Base	Light brown sugar, packed	1 cup	—
Blondie Base	Large egg	1	—
Blondie Base	Vanilla extract	1 teaspoon	—
Blondie Base	All-purpose flour	1 1/2 cups	—
Blondie Base	Baking powder	1/2 teaspoon	—
Blondie Base	Salt	1/4 teaspoon	—
Cinnamon Swirl	Unsalted butter, melted	2 tablespoons	—
Cinnamon Swirl	Light brown sugar	1/4 cup	—
Cinnamon Swirl	Ground cinnamon	1 teaspoon	—
Glaze	Powdered sugar	1 cup	—
Glaze	Milk	2-3 tablespoons	Adjust for consistency
Glaze	Vanilla extract	1/2 teaspoon	—

The brown sugar in both the blondie base and the swirl is what gives these bars that deep, caramel-y flavor instead of the lighter taste you’d get from white sugar. Ground cinnamon does the heavy lifting for that cinnamon roll flavor, so don’t skimp on the full teaspoon in the swirl mixture. If you’ve made cinnamon roll cake before, the flavor profile here will feel familiar, just in chewy blondie bar form.

How to Make Cinnamon Roll Blondie Bars Step by Step

Mix the Blondie Batter

1. Preheat your oven to 350°F (175°C). Grease and flour an 8×8 inch baking pan, or line with parchment paper.
2. In a large bowl, whisk together the melted butter and 1 cup brown sugar until well combined.
3. Beat in the egg and vanilla extract until smooth.

💡 Whisking the butter and sugar first before adding the egg keeps the batter from looking curdled.

4. In a separate bowl, whisk together the flour, baking powder, and salt.
5. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Pro Tip: Overmixing cinnamon roll blondie bars once the flour is in will make them tough instead of chewy, so stop as soon as you don’t see dry streaks.

Build the Cinnamon Swirl

6. Spread half of the blondie batter evenly into the prepared baking pan.
7. In a small bowl, combine the 2 tablespoons melted butter, 1/4 cup brown sugar, and cinnamon. Mix until a paste forms.
8. Drop spoonfuls of the cinnamon mixture over the blondie batter in the pan.
9. Top with the remaining blondie batter, spreading gently to cover most of the cinnamon mixture.
10. Use a knife or skewer to swirl the cinnamon mixture into the blondie batter, creating a marbled effect.

💡 Drag the knife in a few long S-shapes instead of stirring in circles, or the swirl turns muddy instead of marbled.

Bake and Glaze

11. Bake for 20-25 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out with moist crumbs.
12. Let the blondies cool completely in the pan before glazing.

Pro Tip: Glazing warm blondie bars melts the glaze into the batter instead of letting it set on top, so patience actually matters here.

13. In a small bowl, whisk together the powdered sugar, milk, and vanilla extract until smooth. Add more milk if needed to reach desired consistency.
14. Drizzle the glaze over the cooled blondie bars. Let the glaze set before cutting into bars and serving.

Expert Tips for Perfect Cinnamon Roll Blondie Bars

Pro Tips for Success

The key to a chewy, not cakey, texture is measuring your flour correctly — spoon it into the measuring cup and level it off instead of scooping straight from the bag.

For best results, let the bars cool completely to room temperature before you glaze them, since a warm pan will turn your glaze into a thin, see-through wash instead of a clean drizzle.

The most common mistake with these easy blondie bars is skipping the toothpick test and pulling them too early — instead, check at the 20-minute mark and look for moist crumbs, not wet batter.

Cinnamon roll blondie bars work best when the cinnamon swirl mixture is thick and paste-like, so if yours looks runny, it needs a touch more brown sugar to firm it up.

For a deeper caramel note, swap the light brown sugar in the base for dark brown sugar — the swirl and glaze can stay the same.

Delicious Variations

Alternative Ingredients: Stir 1/2 cup chopped pecans or walnuts into the blondie batter before baking for extra crunch alongside the cinnamon swirl.

Quick Version: Skip the swirl step and stir the cinnamon-sugar mixture directly into the batter for a faster, marbled-throughout version of these cinnamon blondies.

Dairy-Free Version: Swap the butter for a plant-based butter stick and use a dairy-free milk in the glaze — the texture holds up close to the original.

Troubleshooting Common Problems

Problem: The cinnamon swirl sank to the bottom instead of staying marbled through the middle. Solution: Make sure the cinnamon mixture is thick and paste-like before adding it, and spread the top layer of batter gently instead of pressing it down.

Problem: The bars came out dry or crumbly. Solution: Pull them from the oven as soon as the toothpick shows moist crumbs, since even a few extra minutes will overbake an 8×8 pan.

How to Store and Reheat Cinnamon Roll Blondie Bars

Storage Method	Duration	Best Practice
Room Temperature	Up to 3 days	Store in an airtight container
Refrigerator	Up to 1 week	Keep covered to prevent drying out
Freezer	Up to 3 months	Freeze unglazed, wrap bars individually

These bars don’t need reheating, but if you want that fresh-baked warmth, a quick 10 seconds in the microwave will soften the glaze and bring back that just-baked smell. If you’re working through a big batch, crumble any extra bars over vanilla ice cream instead of letting them go stale on the counter.

FAQs About Cinnamon Roll Blondie Bars

Honestly, these Cinnamon Roll Blondie Bars are one of those recipes that disappears fast whenever I bring them anywhere — seriously, make a batch and see for yourself. Save this one to Pinterest so it’s ready for your next baking day, and drop a comment if you try the pecan version or swap in dark brown sugar. I mean it, I want to know how yours turn out. If you’re into cinnamon bakes, my cinnamon roll French toast bake is worth trying next, and you’ll find more ideas in this brunch and breakfast baking collection.

Cinnamon Roll Blondie Bars swirl buttery cinnamon-sugar through soft blondie batter and finish with a vanilla glaze — chewy, sweet, and ready in one pan. Save this pin for your next baking day!