Brown Sugar Cinnamon Poptart Bars
Is this the most fun dessert I’ve made in a while? Yes. This is a GIANT Pop-tart bar with the iconic brown sugar cinnamon poptart filling and frosting that you remember from when you were a kid.

Pop-tart Recipe
I’m calling it right now: this giant poptart is the IT breakfast for the coming school year. With a buttery crisp crust that is pure perfection, a warm brown sugar cinnamon filling and a hard dark brown sugar icing on top, this pop-tart checks all of the boxes. Giant poptarts are toasty and delicious and SO STINKIN’ FUN. You’ll start by making brown sugar cinnamon poptarts for the kids but you’ll soon be making excuses to make them for yourself.

Ingredients in Homemade Poptarts
All instructions and ingredient quantities can be found at the bottom of the post!
Sugar Cookie Crust
- Salted butter, softened – I like to use salted butter. If using unsalted butter, add an extra pinch of salt to the dough.
- Granulated sugar
- Egg
- Vanilla
- All-purpose flour
- Baking powder
- Canola oil – This gives the crust a little buttery crisp texture that is perfection.
Brown Sugar Cinnamon Filling
- Melted butter – Again, I use salted butter!
- Light brown sugar
- All-purpose flour
- Ground cinnamon
Glaze
- Very warm water – Using warm water will help the glaze come together and spread onto the pop-tart easily.
- Light corn syrup – This is what will make the glaze harden like royal icing. Don’t omit this one! If needed, you can use merengue powder (1 tsp) as a replacement.
- Dark brown sugar
- Clear vanilla flavoring
- Powdered sugar

How to Make a Giant Pop-tart
- Preheat the oven to 350°F (180°C).
- In the bowl of a stand mixer or with an electric hand mixer, combine the butter and granulated sugar until light in color and fluffy in texture.
- Scrape the sides and add in the egg and vanilla.
- Once combined, add the flour, baking powder, and canola oil. Mix until a soft dough comes together. Divide the dough in half.
- Line a 9×13 pan with parchment paper and press half of the dough into the parchment paper. Alternatively, you can use a rolling pin to roll it out into a rectangle on parchment paper and then cut to fit the 9×13 pan. Remove the parchment paper and dough and place in the freezer.
- Grease the 9×13 pan with non-stick spray and then press the remaining half of the dough into the bottom of the pan. The dough will be thin, just work slowly until the bottom of the pan is evenly covered.
- In a medium sized bowl, combine the ingredients for the filling until you achieve a wet sand texture.
- Spread the filling onto the bottom cookie crust in the pan, leaving the edges empty so we can crimp the top and bottom crust together.
- Remove the rolled out cookie dough from the freezer. Remove the parchment paper and gently place the dough on top of the filling.
- Use the tines of a fork to gently crimp the edges and then cut a few venting slits or holes.
- Bake at 350°F (180°C) for 17-20 minutes or until the edges are golden brown.
- Remove from the oven and allow the poptart to cool completely.
- Once cool, make the glaze by whisking together the warm water, corn syrup, dark brown sugar, and clear vanilla in a medium sized bowl.
- Slowly add the powdered sugar to the water mixture, whisking constantly until all of the powdered sugar has been incorporated.
- Add warm water 1/4 tsp at a time until you reach a slow dripping consistency.
- Carefully remove the baked pop tart from the pan and pour/spread the glaze onto the top of the pop-tart.
- Allow the icing to set completely before cutting.
- Enjoy!

Can I use other fillings?
Yes, you can! I actually have a recipe for a strawberry pop-tart recipe if you’d like. Alternatively, you can use any type of fruit preserve in place of the brown sugar/cinnamon filling.
Storing this Giant Pop-Tart
Allow the glaze to completely harden and store this poptart in an airtight container at room temperature for up to 3 days! You can also freeze for up to 3 months.

Breakfast Faves

Brown Sugar Cinnamon Poptart Bars
Ingredients
Sugar Cookie Crust
- 3/4 cup (167g) salted butter, softened
- 3/4 cup (173g) granulated sugar
- 1 egg
- 1 1/2 tsp vanilla
- 2 1/4 cups (342g) all-purpose flour
- 1 1/2 tsp baking powder
- 1 Tbsp canola oil
Brown Sugar Cinnamon Filling
- 1/4 cup (56g) melted butter
- 1 cup (246g) light brown sugar
- 2 Tbsp all-purpose flour
- 2 tsp ground cinnamon
Glaze
- 2 1/2 Tbsp very warm water, plus more as needed
- 1/2 Tbsp light corn syrup
- 1/4 cup (62g) dark brown sugar
- 1/4 tsp clear vanilla flavoring
- 1 1/2 cups (161g) powdered sugar

Instructions
- Preheat the oven to 350°F (180°C).
- In the bowl of a stand mixer or with an electric hand mixer, combine the butter and granulated sugar until light in color and fluffy in texture.3/4 cup (167g) salted butter, softened, 3/4 cup (173g) granulated sugar
- Scrape the sides and add in the egg and vanilla.1 egg, 1 1/2 tsp vanilla
- Once combined, add the flour, baking powder, and canola oil. Mix until a soft dough comes together. Divide the dough in half.2 1/4 cups (342g) all-purpose flour, 1 1/2 tsp baking powder, 1 Tbsp canola oil
- Line a 9×13 pan with parchment paper and press half of the dough into the parchment paper. Alternatively, you can use a rolling pin to roll it out into a rectangle on parchment paper and then cut to fit the 9×13 pan. Remove the parchment paper and dough and place in the freezer.
- Grease the 9×13 pan with non-stick spray and then press the remaining half of the dough into the bottom of the pan. The dough will be thin, just work slowly until the bottom of the pan is evenly covered.
- In a medium sized bowl, combine the ingredients for the filling until you achieve a wet sand texture.1/4 cup (56g) melted butter, 1 cup (246g) light brown sugar, 2 Tbsp all-purpose flour, 2 tsp ground cinnamon
- Spread the filling onto the bottom cookie crust in the pan, leaving the edges empty so we can crimp the top and bottom crust together.
- Remove the rolled out cookie dough from the freezer. Remove the parchment paper and gently place the dough on top of the filling.
- Use the tongs of a fork to gently crimp the edges and then cut a few venting slits or holes.
- Bake at 350°F (180°C) for 17-20 minutes or until the edges are golden brown.
- Remove from the oven and allow the poptart to cool completely.
- Once cool, make the glaze by whisking together the warm water, corn syrup, dark brown sugar, and clear vanilla in a medium sized bowl.2 1/2 Tbsp very warm water, plus more as needed, 1/2 Tbsp light corn syrup, 1/4 cup (62g) dark brown sugar, 1/4 tsp clear vanilla flavoring
- Slowly add the powdered sugar to the water mixture, whisking constantly until all of the powdered sugar has been incorporated.1 1/2 cups (161g) powdered sugar
- Add warm water 1/4 tsp at a time until you reach a slow dripping consistency.
- Carefully remove the baked pop tart from the pan and pour/spread the glaze onto the top of the pop-tart.
- Allow the icing to set completely before cutting.
- Enjoy!



This is one of those recipes that clearly shows the work behind the scenes. I made it the first time and it came out PERFECT! I really enjoy how Karli’s recipe knowledge makes me look so good! Not only is this delicious but its FUN too. The kids got a kick out of the MASSIVE poptart. If you want the sides to keep their layered look after you cut them, let the topping set even longer than you think. (she tells you in the recipe instructions, I didn’t wait long enough) I touched the glaze lightly and it didn’t make a print so I thought it had hardened. However, underneath was still soft. Wish I could attach pictures to this review.
Yay! I am so glad you loved it. Thanks for the kind words, Chelsey!
Can these be made gluten free? 😍
Yes! I recommend subbing with a 1:1 gluten free flour like King Arthurs and double checking all other ingredients to ensure they are gf!
Hi! I’m so excited to make this recipe! Is there anything I could sub for the egg?
I haven’t tried subbing out the egg, so I’m not sure how it would work. I have a post about potential egg replacers that you can check out and test: https://cookiesfordays.com/egg-substitutes-for-baking/.
Hi Karli,
I’m just curious is it hard to get out of the pan after you bake it? I’m really nervous that it’s gonna like break in half, lmk how you do it! Thanks
If you’re really worried about it breaking when you get it out of the pan you can try lining the pan with parchment (all the way up the sides). Once the cookie has completely cooled, you’ll use the parchment to lift the entire thing out of the pan and then cut like normal!
I like to put my pan in the freezer for like 10 minutes, and then take a dough scraper around the edges to separate it! It will pop right out upside down and depending how long is frozen enough that it doesn’t fall apart when you flip it back over right away!
Hi! Instead of canola oil can I use vegetable?
Yes, you can!
Is this salted or unsalted butter?
Salted!
These tasted great. Thanks for sharing. The instructions were easy to follow. I will make these again!
Hi,
Is there any way to prep this in advance? I was wanting to make it Wednesday or Thursday night and maybe store it in the fridge until I bake it Saturday morning? Would this be a possibility? Or would it be better to bake it Thursday night and just store them in an airtight container?
Hi! I would bake and completely assemble and cut. Then I’d store in an airtight container in the freezer and pull it out the morning you want to serve!
Hi, I haven’t made it yet because I noticed the grams you listed do not lineup with the volume measurements you listed- one cup of all-purpose flour is 120 g, so 2.25 c should be 270 g but you’ve got it as 342 g, same issue with sugar. Are the grams you listed the actual grams you used in the recipe? If so that’s totally fine and I’ll just ignore the volume entirely. There’s just such a difference between the two I don’t want to take the chance
Hi! Yes, the grams listed are what I used in developing the recipe. And you can of course use the imperial measurements, if preferred. I have a post all about why my metric measurements may differ from what you might be thinking here: https://cookingwithkarli.com/metric-measurements/
I just made this giant pop tart and it came out amazing and oh so good!! It is a hit!!