Name: Cinnamon Sugar Blondie Bars with Vanilla Frosting Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 2 cups all-purpose flour; 1 cup brown sugar; 1/2 cup granulated sugar; 1/2 cup unsalted butter, softened; 1/2 cup sour cream; 2 large eggs; 1 tablespoon vanilla extract; 1 tablespoon ground cinnamon; 1 teaspoon baking powder; 1/2 teaspoon baking soda; 1/4 teaspoon salt; 1 cup powdered sugar; 2 tablespoons milk; 1 teaspoon vanilla extract; 1 tablespoon ground cinnamon; 2 tablespoons granulated sugar (for topping)

Print Recipe· 4.3 from 33 reviews

If you are searching for a treat that combines warm, cozy flavors with a moist, tender texture, look no further than this Cinnamon Sugar Blondie Bars with Vanilla Frosting Recipe. These bars bring together the sweet, aromatic zing of cinnamon sugar with the rich, creamy touch of vanilla frosting, making every bite an absolute delight. Whether you’re sharing them with friends or savoring a quiet moment at home, this recipe promises a perfect balance of sweetness and spice that feels like a warm hug in dessert form.

Ingredients You’ll Need

The image shows a top-down view of various baking ingredients arranged neatly on a white marbled surface. There are multiple containers including a clear glass bowl with white flour in the top left, a small white plate with two cinnamon sticks on top of a pile of brown powder nearby, and a white bowl holding two yellow sticks of butter in the top right. Below them, there are three brown eggs in a wooden bowl, a small white bowl filled with dark brown cocoa powder, and another white bowl with white granulated sugar. Scattered around are small glass jars and white pitchers holding liquids like milk and vanilla extract, as well as a small white plate with more butter and a metal tray filled with white powdered sugar. Everything is placed with care and evenly spaced. photo taken with an iphone --ar 4:5 --v 7

Don’t let the simplicity of the ingredients fool you—each one plays a crucial role in creating the luscious texture and irresistible flavor of these cinnamon sugar blondie bars. From the soft butter that brings moistness to the tangy sour cream that keeps the bars tender, every element is thoughtfully chosen for perfection.

All-purpose flour: The foundation for structure, ensuring the bars bake up just right.
Brown sugar: Adds deep caramel notes and moisture.
Granulated sugar: Balances sweetness and helps create a tender crumb.
Unsalted butter, softened: Brings richness and tender texture.
Sour cream: Keeps the bars moist and enhances the tender crumb.
Large eggs: Bind the ingredients and provide stability.
Vanilla extract: Infuses warmth and enhances all flavors.
Ground cinnamon: The star spice that gives the bars their signature aroma and warmth.
Baking powder: Helps the bars rise just enough without becoming cakey.
Baking soda: Works alongside baking powder to provide perfect lift and texture.
Salt: Balances the sweetness and heightens flavors.
Powdered sugar (for frosting): Creates a silky, sweet vanilla frosting.
Milk (for frosting): Thins the frosting to the perfect spreadable consistency.

How to Make Cinnamon Sugar Blondie Bars with Vanilla Frosting Recipe

Step 1: Prepare Your Baking Pan

Start by preheating your oven to 350°F (175°C). Grease a 9×13 inch baking pan well so your bars won’t stick. This step is simple but essential to ensure the beautiful blondies slide out effortlessly once baked.

Step 2: Cream the Butter and Sugars

In a large bowl, beat together the softened butter, brown sugar, and granulated sugar until the mixture is smooth and creamy. This process incorporates air, giving your blondies a light yet tender texture with just the right amount of sweetness.

Step 3: Add the Wet Ingredients

Mix in the eggs, sour cream, and vanilla extract until everything is well combined. The sour cream adds a subtle tang while keeping the bars moist and delightfully soft.

Step 4: Combine the Dry Ingredients

In a separate bowl, whisk the flour, baking powder, baking soda, ground cinnamon, and salt together. This dry mix not only adds structure but is where the magic of cinnamon infuses into every bite.

Step 5: Bring It All Together

Gradually add the dry ingredients to your wet mixture, stirring just until everything is combined. Avoid overmixing here to keep the blondies tender instead of dense.

Step 6: Spread and Top with Cinnamon Sugar

Smooth the batter evenly into your prepared baking pan. Next, mix cinnamon and sugar to make a topping and sprinkle it generously over the batter. This topping creates a lovely sweet crust that will complement the soft interior perfectly.

Step 7: Bake to Perfection

Bake the bars for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean. Watch that golden-brown top form—it’s a surefire sign you’re almost there!

Step 8: Cool Completely and Frost

Allow the bars to cool completely before frosting to prevent melting. For the frosting, whisk together powdered sugar, milk, and vanilla extract until silky smooth, then spread evenly over the cooled bars, adding a luscious vanilla finish to your cinnamon sugar masterpiece.

How to Serve Cinnamon Sugar Blondie Bars with Vanilla Frosting Recipe

Two thick squares of cinnamon roll are placed side by side on a white plate. Each square has multiple soft, golden-brown layers swirled with dark cinnamon filling, topped with a light drizzle of creamy white icing that pools slightly around the base. The surface shows a slightly caramelized, spiced texture with a dusting of cinnamon powder. The background is a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Garnishes

For an extra touch of beauty and flavor, try sprinkling a little extra cinnamon sugar on top of the vanilla frosting or adding a few toasted chopped nuts like pecans or walnuts for crunch. Whipped cream or a dusting of cocoa powder can also elevate the presentation.

Side Dishes

These blondie bars pair wonderfully with a scoop of vanilla ice cream or a dollop of fresh whipped cream. A cup of hot coffee, chai tea, or warm spiced cider complements the cinnamon notes perfectly and makes for a cozy treat any time of day.

Creative Ways to Present

Try cutting the bars into bite-sized squares for a party platter or layering them in a clear glass trifle bowl with layers of whipped cream and chopped fruit for a beautiful dessert display. Wrapped individually in parchment paper tied with twine, they also make charming gifts for friends and family.

Make Ahead and Storage

Storing Leftovers

Keep leftover bars in an airtight container at room temperature for up to 3 days. This method keeps the bars soft and the frosting fresh, making it easy to satisfy your sweet tooth anytime.

Freezing

If you want to make these bars in advance, they freeze beautifully. Wrap each bar individually in plastic wrap and store in a freezer-safe container or bag for up to 2 months. Thaw at room temperature when ready to enjoy.

Reheating

Warm the bars slightly in the microwave for 10 to 15 seconds to bring back that fresh-baked softness and enhance the vanilla frosting’s creaminess. Just a little heat goes a long way in reviving their delicious flavor.

FAQs

Can I use a different kind of flour for this recipe?

All-purpose flour works best here because it gives the bars the ideal structure and tenderness. Using whole wheat flour can make them denser and affect the delicate crumb.

Is there a way to make these bars dairy-free?

Absolutely! Swap the unsalted butter for a vegan butter alternative and substitute the sour cream with a dairy-free yogurt or a plant-based sour cream. The flavor will be just as delightful.

Can I add mix-ins like nuts or chocolate chips?

Yes! Adding 1 cup of chopped nuts or chocolate chips to the batter is a fantastic way to add texture and extra flavor. Just fold them in with the dry ingredients before baking.

How thick should the bars be before baking?

Spreading the batter evenly in a 9×13 inch pan results in bars about 1 to 1.5 inches thick, which bakes up moist and tender without drying out or becoming too dense.

What is the best way to get clean slices?

Use a sharp knife wiped clean between cuts. You can also chill the bars for 15-20 minutes before slicing to help the frosting set and reduce sticking.

Final Thoughts

You truly cannot go wrong when you make the Cinnamon Sugar Blondie Bars with Vanilla Frosting Recipe. It’s a comforting, crowd-pleasing dessert that’s as simple to prepare as it is delightful to eat. I hope you find as much joy in baking and sharing these bars as I do every time I make them. Give them a try soon—you deserve a little sweet magic in your life!