These lemon sugar cookie bars are soft and delicious, with a delicious citrus lemon flavor. Made in a 9x13 pan, this easy lemon dessert is simple to make using my sugar cookie bars recipe as the base!
Whether you're celebrating a birthday, have a sweet tooth, or just want something tasty to snack on, these lemon sugar cookies bars are everything you want and more. Similar to the flavor of my soft & thick lemon sugar cookies, these are a mix between a sugar cookie and lemon shortbread bars...but much softer and melt-in-your-mouth delicious!
During the height of the pandemic, my family & I experimented with turning my frosted sugar cookie bars into a lemon version...and that's how this scrumptious recipe came to be!
What Makes These The Best Lemon Cookie Bars?
- Super soft cookies: These easy lemon cookie bars are soft and buttery with a strong hint of tangy sweetness, thanks to the lemon buttercream!
- No cookie cutters needed! All you need is a 9x13 baking pan and a knife to cut the lemon bars. No cookie cutters needed!
- Great for freezing: Keep a stash in the freezer and grab a bar any time you have a craving for a tasty lemon dessert.
- Tastes like lemonade: These cookie bars taste like frosted lemonade from Chick Fil A! They have a luscious lemon flavor that sets them apart from my regular sugar cookie bars.
Ingredients Needed For Sugar Cookie Bars:
- Sugar Cookie Dough: Butter, granulated sugar, egg, vanilla extract, lemon extract, baking powder, salt, all-purpose flour
- Lemon Buttercream Frosting: butter, powdered sugar, vanilla extract, lemon extract, salt, fresh lemon juice (optional but so good!)
- Tools: 9x13 metal baking pan, parchment paper, spatula.
Tip: Take a peek at my favorite soft and thick lemon sugar cookies when you want something besides cookie bars!
How To Make Frosted Lemon Cookie Bars
Step 1: Make Dough and Bake
Preheat oven to 350° degrees. Follow the instructions in the recipe card below on how to make the sugar cookie dough. Press the dough into a greased and parchment-lined 9x13 metal baking pan. Bake and let cool completely before adding frosting.
Tip: Dough too sticky? Place another piece of parchment paper on top to press the dough into the pan!
Step 2: Make Lemon Buttercream Frosting
While the lemon bars are baking in the oven, use this time to make the lemon buttercream frosting. This lemon buttercream is based on the buttercream frosting recipe that I use on all of my sugar cookies!
To make these lemon sugar cookie bars, I make my frosting that same way but I add 1.5 teaspoons of lemon extract and 1 tablespoon of fresh lemon juice to make it extra lemony.
Tip: If you really want that lemon flavor to shine through, add an extra ½ teaspoon of lemon extract (my family likes it very lemony, so we always add 2 teaspoons!).
Step 3: Frost and Cut!
Now it's time to frost the cooled bars! Use the spatula and drop dollops of the buttercream frosting on the top of the cookie bars. I recommend using a butter knife or offset spatula to smooth out the frosting in an even layer. To cut, use a large, sharp knife (this will give you a cleaner cut than cutting with a butter knife).
Tip: For the best lemon bars, sprinkle a bit of lemon zest over the top! You can also top these with the frosting used in my white chocolate raspberry cookie cake to turn these into raspberry lemon cookie bars!
Storage & Freezing
How long can I keep these lemon bars?
Place in airtight container and store in for 2-3 days (they will keep longer, but will start to dry out after about 3 days). These bars are also amazing frozen and will keep in the freezer for 1-2 months (any longer and they tend to dry out).
Can lemon sugar cookie bars be frozen?
Yes! These lemon cookie bars can easily be frozen (they're super yummy to eat when frozen!). I like to individually wrap each bar in some plastic wrap or saran wrap and place them in a freezer-safe bag. You can keep lemon cookie bars frozen for up to two months
Frequently Asked Questions:
Start out by placing the frosted lemon bars in the fridge for about 30 minutes to allow frosting to "harden", making it easier to cut! Use a large, sharp knife to cut 24 even-sized squares. Don't forget to wipe the knife in between each cut so you get even slices.
If you don't like buttercream or want to try a different posting, you can use some of my other sugar cookie frosting recipes and add lemon extract to it! If the recipe calls for almond extract, simply replace it with lemon and adjust to your liking. Then, top them off with a bit of lemon zest for extra flavor!
Cream Cheese Frosting for Cookies = Double the batch, omit the almond extract, and add in the lemon extract & fresh lemon juice from this recipe to turn this into lemon cream cheese frosting - a perfect alternative to buttercream!
Easy Sugar Cookie Glaze = The glaze is a runny icing that you can easily drizzle or dip the cookie bars into. To keep the lemony flavor, consider making a lemon glaze by replacing the vanilla extract with 1 teaspoon of lemon extract or fresh lemon juice.
Royal Icing = If you like it when the icing on a cookie is hard, this is the type of icing you want to use (just be sure that your lemon extract is oil-free). It also works great if you plan on adding some sort of a design to the lemon bars.
Lemon Sugar Cookie Bars
Ingredients
⭐️ Before you begin! If you make this, will you do me a huge favor afterwards and leave a review and rating letting me know how you liked this recipe? This helps my small business thrive so I can continue providing free recipes and high-quality content for you.
Instructions
- Preheat oven to 350℉. If butter hasn't been softened you can place in microwave for 10 seconds to *slightly* soften it.
- In a large bowl, cream together the 1 cup unsalted butter (2 sticks) and 1 cup granulated sugar on medium speed for 20-30 seconds. While the mixer is still on medium speed, add in 1 large egg, 2 teaspoons vanilla extract, and 1 tablespoon lemon extract.
- Once mixed, add in 1 ½ teaspoons baking powder, ½ teaspoon salt, and all-purpose flour ½ cup at a time on low speed (2 ¼ cups all-purpose flour total). Mix until all flour disappears, typically 20-30 seconds. You do not need to beat/mix this any longer than it takes to mix in the flour.*Be sure to measure your flour properly using the spoon & level method, as adding too much can result in dry bars.
- Spray a metal 9×13 pan with cooking spray, then line pan with parchment paper (having the grease underneath the paper will help the paper stay down).
- Press dough into an even layer in pan.
- Bake bars at 350℉ for 14-16 minutes. The trick to soft sugar cookie bars is to take them out right when you see the TINIEST amount of brown around the edges. The center may look underdone and this is okay; the bars will continue to bake in the hot pan when cooling.
- Allow to cool completely before frosting (you can put the pan in the fridge on a cooling rack to speed this up).
- In a large bowl, beat ½ cup unsalted butter (1 stick) on medium speed using a hand or stand mixer (with paddle attachment) for 1-2 minutes (until light and creamy).
- Keeping the mixer on medium speed, slowly add in 1 teaspoon vanilla extract, 1 ½ teaspoons lemon extract, and 2 cups powdered sugar. Once incorporated, turn the mixer to high speed and beat for 2 minutes until light and fluffy. Add 1 tablespoon fresh lemon juice and beat for 30 seconds. If desired, add a A drop of yellow food coloring.* If omitting the fresh lemon juice (or if your frosting is too thick to spread), add a splash of milk to help thin the frosting.
- If using sprinkles, add them immediately after frosting. If you wait too long, the frosting will set and the sprinkles won't stick. Cut into 24 squares.
- Place in airtight container and store in for 2-3 days (they will keep longer, but will start to dry out after about 3 days). These bars are also amazing frozen and will keep in the freezer for 1-2 months (any longer and they tend to dry out).
Notes from Melissa
Did you make this?
I'd LOVE to hear your thoughts! Leave a review & photo of your creation and be sure to mention @DesignEatRepeat or tag #DesignEatRepeat on Instagram!Save this recipe!
I'll email this post to you, so you can come back to it later!
Light and fluffy frosting with a bright lemon flavor. Delicious! Family approves! #BakeandTake #DesignEatRepeat
Fresh lemon flavor with light a fluffy frosting! Definitely a hit with others as they are asking for the recipe! #TakeandBake #DesignEatRepeat
These were the perfect cookie bars to make for a summer gathering we were hosting. My son and I made them, and he loves lemon, so he loves these bars. These might become a regular recipe all year round! We made these for these Skip the Scoop Summer Challenge and we're glad we tried them out. #skipthescoop
These lemon bars are delicious! The lemon buttercream frosting is what makes them extra special! This recipe is a keeper!
If you need a quick, light, summery dessert for a crowd, this is it! These bars have a great lemony flavor that isn't overly sweet. EVERY recipe in Melissa's book turns out fantastic and this one is no exception. I added a little lemon peel on top of the frosting, but these are great without that too!
I made these last week for a "Hello, Summer" and Retirement Celebration for my five closest friends. The two retirees love lemon, and while I've made several lemon desserts over the years, I thought I'd try something new. This recipe was so much easier and less time consuming than my old faves. They were a HUGH hit! The guests ate more than one (very rare for sixtysomethings, well, other than myself) and everyone wanted to take extras home. I totally agree with the description of this recipe being a mix between lemon bars and shortbread cookies. DELISH! A must make.
That makes me so happy to hear, I'm so glad everyone enjoyed the recipe! Thank you so much for taking the time to leave a review, Kimberly! I really appreciate it!
My son and I have made these twice now and are obsessed! The recipe was so easy to follow that my 12 year old made them by his self and they turned out delicious!! Absolutely LOVE all of her recipes! Highly recommend ❤️
So happy to hear you and the kiddo enjoy this recipe so much! Thank you so much for taking the time to leave a review, Angie! I really appreciate it!
So delicious! I subbed 1:1 King Arthur gluten free flour in the cookie portion, but made no other adjustments. These turned out exactly how I hoped: light, lemony, and with a soft texture. Huge hit with adults and kids. For how easy these are to make, these have a big payoff! Thank you for a great summer recipe!
So happy to hear you enjoyed this recipe, Amelia! Thank you so much for leaving a review, I really appreciate it!
Delicious! I’ve made this recipe three times in two weeks and friends keep asking for more!!
So glad to hear you all enjoyed this recipe! Thank you so much for leaving a review, Dani!
Super yummy and delicious! Your recipes are always very easy to follow.
Thank you so much for leaving a review, Amanda!
Made them for Mother’s Day and everyone RAVED about them. Made them again today for my neighbor who cuts my grass.
So glad to hear everyone enjoyed this recipe! Thank you so much for leaving a review, Gwen!
I looooved loved loved these!! So thick, so moist, sooo scrumptious! They came out so perfect
I looooved these!! So thick, so moist, sooo scrumptious!
Thank you so much for leaving a review, Elly!
These are the best lemon bars EVER!!! I made them with the lemons from our tree, and wow! They turned out incredible! Thank you for all the amazing recipes! :D