Easy Snickerdoodle Cookie Bars

Name: Snickerdoodle Cookie Bars
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Ingredients: 170 g unsalted butter (melted and slightly cooled (¾ cup)); 150 g brown sugar (packed, (¾ cup) -- (I used dark brown)); 100 g granulated sugar (½ cup); 2 large eggs; 2 teaspoons vanilla extract; 240 g all-purpose flour (2 cups); 1 ½ teaspoons baking powder; ½ teaspoon cream of tartar; ½ teaspoon fine sea salt; 50 g granulated sugar (¼ cup); 1 ½ teaspoons ground cinnamon

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My Snickerdoodle Cookie Bars are soft, chewy, and full of that classic cinnamon-sugar flavor we all love. Instead of rolling out dough ball by ball, these bars are baked in one pan and sliced — easy, quick, and just as delicious.

If you're looking for something richer, try my brownie crumb bars or my apple pie crumble bars. If you're a big fan of cozy cinnamon treats, try my cinnamon sugar biscoff blondies too.

Overhead picture of a hand holding three snickerdoodle cookie bar squares with more cookie bars in the background.

⏱️ Ready In: About 45 minutes (plus cooling)

🔥 Bake Time: 25–30 minutes

🍽️ Serves: 24 bars

✨ Calories: Approximately 143 per bar

🥄 Main Ingredients: Butter, brown sugar, cream of tartar, cinnamon sugar

🌿 Dietary Info: Vegetarian (easily made dairy-free)

💛 Why You'll Love It: All the cozy cinnamon-sugar flavor of snickerdoodles, in one easy pan.

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Why You'll Love This Recipe

No rolling required: One pan, one batch of dough — no scooping and rolling dozens of cookies in sugar.
Soft, chewy, and buttery: A melted-butter dough gives these bars that dense, chewy snickerdoodle bite.
That signature tang: Cream of tartar delivers the classic snickerdoodle flavor you can't get any other way.
Pantry-staple ingredients: Nothing fancy — just butter, sugar, flour, and spices you likely already have, like my brown butter sugar cookies.
Perfect for a crowd: Twenty-four bars make them ideal for bake sales, holidays, or a cozy treat alongside pumpkin cream cheese cookies (or their sourdough version: sourdough pumpkin cheesecake cookies) or a slice of chocolate chunk banana bread.

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Quick Look: Snickerdoodle Cookie Bars
Why You'll Love This Recipe
Ingredients
Easy Substitutions & Variations
How to Make Snickerdoodle Cookie Bars
Expert Tips
What Makes This Recipe Special?
Snickerdoodle Cookie Bars FAQs
Snickerdoodle Cookie Bars Troubleshooting Guide
Storage
Other Dessert Bar Recipes to Consider
Snickerdoodle Cookie Bars

Ingredients

Cookie bar dough:

unsalted butter, melted: The base of that dense, chewy texture.
brown sugar + granulated sugar: Brown sugar brings chew and caramel notes; granulated keeps them light.
eggs + vanilla: Bind the dough and add flavor.
all-purpose flour: The structure of the bars.
baking powder: For a gentle lift.
cream of tartar: The secret to that signature snickerdoodle tang — don't skip it.
fine sea salt: Balances the sweetness.

Cinnamon sugar topping:

granulated sugar + ground cinnamon: That classic crackly, cinnamon-sugar top. These are also featured in my peach crumb bars recipe.

See the recipe card for quantities.

Easy Substitutions & Variations

Dairy-free: Use a plant-based butter.
Gluten-free: Swap in a 1:1 gluten-free flour blend.
Deeper flavor: Use all brown sugar for a caramel-like richness, like my brown butter oatmeal cookies.
Cream of tartar swap: Replace with ½ teaspoon lemon juice or white vinegar if needed.
Add-ins: Stir in white chocolate chips or chopped pecans for extra texture.
Glaze: Drizzle with a simple vanilla glaze for added sweetness.
Thicker bars: Bake in an 8x8 pan for tall, bakery-style bars (increase bake time slightly), like my blueberry crumb bars.
Extra spice: Add a pinch of nutmeg or cardamom to the cinnamon sugar.

See recipe card for quantities.

Note: I bake by weight for accuracy. Cup measurements are approximate and may vary depending on how you scoop.

Overhead picture of snickerdoodle cookie bar batter spread out in a lined 9x13 pan before being topped with cinnamon sugar.

Step 1: Make the cinnamon sugar: Preheat your oven to 350°F and line a 9x13-inch metal pan with parchment. Stir together the sugar and cinnamon for the topping and set aside.

Step 2: Mix the wet ingredients: In a large bowl, whisk the melted butter, brown sugar, and granulated sugar until smooth. Add the eggs and vanilla and whisk until glossy.

Overhead picture of freshly baked snickerdoodle cookie bars in a lined 9x13 pan.

Step 3: Add the dry ingredients: Fold in the flour, baking powder, cream of tartar, and salt until a thick dough forms, then spread it evenly into the pan and sprinkle the cinnamon sugar generously over the top.

Step 4: Bake and slice: Bake 25–30 minutes, until the edges are golden and a toothpick in the center comes out with moist crumbs. Let cool completely in the pan, then lift out and slice.

Weigh your ingredients! Using a kitchen scale ensures your measurements are accurate, which is key for getting consistent results in baking. It takes the guesswork out of measuring and helps your recipes turn out exactly as intended every time.

Expert Tips

Don't skip the cream of tartar. It gives that signature snickerdoodle tang — there's no true substitute for the flavor.
Cool the melted butter slightly. Adding hot butter can scramble the eggs; let it cool for a few minutes first.
Choose your texture with the timer. Pull them at 25 minutes for a gooier center, or bake the full 30 for firmer, cookie-like bars.
Sprinkle the topping generously. A thick layer of cinnamon sugar gives the crackly, sparkly top that makes these look bakery-made.
Let them cool before slicing. They firm up as they cool — cutting warm bars leads to crumbly, messy edges.

What Makes This Recipe Special?

The magic is in the cream of tartar. It's what separates a snickerdoodle from a plain sugar cookie, adding that subtle tang and chew you can't fake. Combined with a melted-butter dough and a generous cinnamon-sugar top, these bars capture everything people love about the classic cookie — with a fraction of the effort.

They're also endlessly adaptable. Dress them up with a vanilla glaze, fold in white chocolate, or bake them thick and bakery-style. They're the kind of easy, crowd-pleasing dessert I reach for right alongside my strawberry rhubarb crumb bars, fresh lemon crumb bars, and sourdough discard carrot snack cake when I need something quick and cozy.

What does cream of tartar do in snickerdoodles?

It gives snickerdoodles their signature tang and helps create that soft, chewy texture. If you leave it out, you'll essentially have a cinnamon-sugar sugar cookie bar — still tasty, but missing the classic flavor.

Can I make these without cream of tartar?

You can substitute ½ teaspoon of lemon juice or white vinegar for a similar tang, though the flavor won't be quite the same.

How do I know when cookie bars are done?

The edges should be golden and a toothpick inserted in the center should come out with moist crumbs (not wet batter). They continue to set as they cool.

Can I make them thicker?

Yes — bake the dough in an 8x8 pan for tall, bakery-style bars, and add a few extra minutes to the bake time.

Problem	Cause	Fix
Bars too cakey	Too much flour, or overmixed.	Measure by weight and fold just until combined.
No snickerdoodle tang	Cream of tartar left out.	Don't skip it — it's the signature flavor.
Greasy or dense	Hot butter cooked the eggs.	Cool the melted butter slightly before mixing.
Crumbly, messy slices	Cut while warm.	Cool completely before lifting out and slicing.
Dry, hard bars	Overbaked.	Pull at 25 minutes for a softer center.

Storage

Store in an airtight container at room temperature for 3–4 days.
Refrigerate for up to a week, or freeze for up to 2 months.
To freeze, wrap the bars tightly in plastic wrap and place in a freezer-safe bag. Thaw at room temperature before serving.

Other Dessert Bar Recipes to Consider

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