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4.97 from 78 votes

These incredible Gluten Free Lemon Brownies are topped with creamy lemonade icing. They are decadent, flavorful, and so easy to make!

Three lemon brownies stacked on top of each other on a plate.

I know I have talked about our lemon tree in a few posts, but it is hard not to love our tree. It gives us tons of giant lemons most of the year! What better way to celebrate our lemon tree than to make the perfect gluten free lemon dessert?

This new lemony lemon brownies recipe is pretty incredible. They melt in your mouth with every delicious bite. I make a lot of brownies, but I think you will agree this is going to become popular!

If you want to try more of my gluten free brownie recipes, try my traditional gluten free brownies. If you love white chocolate, these gluten free white chocolate brownies are pretty amazing too!

This recipe is amazing! I’ve made it a few times. YUM.”

Barbara F.

Why these are so good:

  1. These lemony gluten free lemon brownies are bursting with sweet, tart lemon flavors.
  2. These brownies are soft and delicious. All you need are 7 simple ingredients!
  3. Enjoy these homemade brownies plain, or top the gluten free lemon brownies with lemon glaze!

I get many emails and comments from non-gluten-free readers asking for a gluten version. I haven’t baked with regular flour in over 13 years. I recommend checking out one of these two recipes if you are not gluten free: These Triple Lemon Brownies and Lemon Brownies. The recipes are very similar, except the second has an extra egg.

Top Pick
King Arthur, Measure for Measure Flour 3 lbs

This is one of my favorite gluten-free flour blends for cookies, cakes, pie crust, biscuits, and muffins! (Do not use this flour blend for yeast recipes.)

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Ingredient Notes:

Photos of the lemon brownie ingredients.
  • Gluten free flour blend – I tested this recipe using Bob’s Red Mill 1 to 1 Gluten Free Flour Blend, Pillsbury Gluten Free Flour Blend, and King Arthur’s Measure for Measure Gluten Free Blend. That doesn’t mean others will not work; I just have not tested other flours, and I can not guarantee the recipe will work if you use other mixes.
  • Xanthan Gum – If your gluten-free flour blend doesn’t contain xanthan gum, guar gum, or another binder, please add 1 teaspoon.
  • Lemon – Fresh is best because you need lemon juice and zest.
  • Butter – To make this recipe dairy-free, substitute the butter for vegan butter.

If you are a lemon fanatic, I have tons of delicious gluten free lemon dessert recipes on the blog! You may love these Gluten Free Lemon Oat Bars, too.

How To Make Gluten Free Lemon Brownies:

Photos of the wet and dry lemon brownie ingredients.

Step 1: Add the gluten free flour, sugar, and salt to a bowl and whisk to blend them.

Step 2: Add the lemon juice, lemon zest, eggs, and butter to a bowl and whisk to blend.

HINT: Partially melt the butter so it mixes in more easily.

Photos of steps three and four.

Step 3: Pour the wet ingredients into the dry ingredients. Mix with a spoon to blend them together.

NOTE: You can also use a standing mixer if you prefer.

Step 4: This is what your lemon brownie batter should look like.

Spreading the brownie batter in the 8x8 pan.

Step 5: Line your 8×8 baking pan with parchment paper and dump the batter in.

Step 6: Use a spoon to spread the batter evenly in the pan. This can be a bit tricky, so don’t worry if your top isn’t perfectly smooth. You can get the top of the spoon with a little water to make it easier. The lemonade glaze will cover the uneven parts.

Bake the brownies for 20-22 minutes at 350º F. Remove from the oven and allow the gluten free lemon brownies to cool.

Icing ingredients in the bowl.

Step 7: Add the powdered sugar and lemon juice to a bowl. Whisk to blend the glaze.

Glaze spread over the lemon brownies.

Step 8: When the brownies are cool, spread the glaze over the top of the brownies.

You may also love using these brownies to make this easy recipe to make Gluten Free Ice Cream Sandwiches too!

Variations:

  • Add white chocolate chips to the brownie batter.
  • Substitute lime juice and zest.
  • Make them orange with orange juice and zest.

You may also like these chewy Gluten Free Butterscotch Brownies!

Tips and Recipe FAQ:

Can you double the recipe to make a larger batch?

Yes, you can definitely double the recipe and make a 9×13 pan full of lemon brownies!

Why is there no baking powder in this recipe?

You don’t need baking powder because you want the brownies to be dense and moist.

How do you store these lemon brownies?

I always store gluten free baked goods like these lemon brownies in the refrigerator. Keep them in an airtight container.

Can you freeze the extra lemon brownies?

You can easily freeze the extra lemon brownies. Place the cooled brownies into a freezer-safe container or zip-style baggie.

How much lemon glaze can you use?

You can use as much or as little lemon glaze as you like. They taste delicious plain, without the icing, too!

This gluten free lemon bundt cake recipe and gluten free lemon tart recipe are also full of lemon flavor if you are looking for a cake recipe!

A gluten free lemon brownie on a plate.

More Gluten Free Brownie Recipes:

a stack of three gluten free lemon brownies

Gluten Free Lemon Brownies

Sandi Gaertner
These moist lemony gluten free lemon brownies are topped with a delicious lemonade glaze.
Love this recipe?Give it a star rating!
4.97 from 78 votes
gluten free allergy icon
nut free allergen icon
soy free allergy icon
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Gluten Free Dessert Recipes
Cuisine American
Servings 12 brownies
Calories 234 kcal

*As an Amazon Associate, I earn a small commission from qualifying purchases.

Equipment

Ingredients
  

  • 1 ¼ cups gluten free flour blend * see note, you may need more or less flour!
  • 1 cup sugar One reader has used monk fruit sweetener in place of sugar.
  • ½ teaspoon salt
  • 2 size large eggs
  • 8 tablespoons butter unsalted, semi-melted
  • ¼ cup lemon juice
  • 1 tablespoon lemon zest
  • 1 teaspoon vanilla extract OPTIONAL

Lemonade Glaze

  • 1 ¼ cups powdered sugar
  • 2-3 tablespoons lemon juice more if needed

Instructions
 

  • Preheat the oven to 350º F.
  • In a large mixing bowl, add the dry ingredients and whisk to blend.
  • Place the butter into a microwave safe dish and microwave it for 30 seconds to partially melt it.
  • Pour the rest of the wet ingredients into the butter and whisk to blend.
  • Add the wet ingredients to the dry ingredients and mix.
  • Line an 8×8 baking pan with parchment paper. You can also spray non-stick oil in the pan if you prefer.
  • Add the lemon brownie batter to the pan and use a spatula or large spoon to spread it around evenly.
  • Bake for 20 to 25 minutes until done. To test for doneness, insert a toothpick into the middle of the brownies. If there is batter on the toothpick, it needs to bake a little longer.
  • Remove the cooked lemon brownies from the oven. Allow them to cool.
  • Mix up the icing and spread over the cooled brownies. Enjoy!

Notes

  1. I have tested this recipe with King Arthur Measure for Measure GF and Bob’s Red Mill 1 to 1 GF blend. That doesn’t mean others will not work, I just have not tested other flours.
  2. Xanthan Gum – If your gluten free flour blend doesn’t contain xanthan gum or guar gum, please add 1 teaspoon.
  3. To make this recipe dairy-free, substitute the butter for vegan butter.
  4. These lemon brownies will keep for up to 4 days in an air-tight container or up to 4 months in the freezer. I recommend storing them in the refrigerator.
To measure your gluten free flour, I recommend using the spoon method or leveling method.
Put the measuring scoop into the flour and fill. Do not pack the flour. Use a knife to scrape along the top to remove the extra flour.
You can also use a spoon to fill the measuring cup. Use a knife to level along the top to remove the extra flour.

SPECIAL NOTE

Please know that every gluten free flour blend has a different starch to grain ratio. If you use a blend I didn’t test, you may need to adjust your moisture levels in your baked goods.

Nutrition

Serving: 1brownieCalories: 234kcalCarbohydrates: 39gProtein: 2gFat: 9gSaturated Fat: 5gPolyunsaturated Fat: 1gMonounsaturated Fat: 2gTrans Fat: 1gCholesterol: 47mgSodium: 174mgPotassium: 22mgFiber: 1gSugar: 30gVitamin A: 274IUVitamin C: 4mgCalcium: 16mgIron: 1mg
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Nutrition Disclaimer

Nutritional information is an estimate provided to you as a courtesy. You should calculate the actual nutritional information with the products and brands you are using with your preferred nutritional calculator.

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75 Comments

  1. 5 stars
    I made these lemon brownies today with fresh lemons picked from our tree. Pamela’s GF baking mix was my flour blend. Excellent recipe and very easy to follow.

    Tart, moist and delicious! And addictive….kept going back for one more bite.
    Thanks for posting your recipe.

  2. 5 stars
    Thank you for the recipe, the flavor on them was great! I am wondering though if the recipe is missing baking soda? Mine were barely a 1/2″ high. Thoughts? Thank you!

  3. 5 stars
    My oh My! These are just the best lemon bars ever, Whether or not they are GF! Tender, lemony, Just firm enough to hold up well on the Christmas tray, but they didn’t last long. I forgot the lemon zest, and that made them a delicate lemon flavor as the lemon glaze added just that extra kick. They were still great, but I’m a real lemon fan and I’ll remember the lemon zest next time. I added paper thin slices of kumquat for a beautiful presentation.. and it only took two kumquats, if you don’t live where they are plentiful. Thank you for my new top-of-list bar cookie!

  4. 5 stars
    Have made this twice now – first time per the original recipe, and the second time I got creative after reading some of the comments… added 1tsp of bicarbonate of soda to the batter, and dumped a load of white chocolate into the pan before pouring in the batter!

    I don’t do much gluten-free baking, but needed to bake something for my wife’s friend who has celiac disease, when she came to visit.

    Great recipe – fantastic flavour and the second try with sodium bicarb, I wouldn’t even know it had no gluten – was so fluffy and springy!! Would recommend, and will be making again 🙂

    1. Hi Charles, thank you so much for your note. I love that you made these for a friend. I will have to try that baking soda and white chocolate in the pan next time I make these!!

  5. 4 stars
    Although tasty, this is more a lemon bar vs. a brownie. Maybe this needs baking soda or powder? My result was 1/3″ high.

  6. 5 stars
    I’ve made these twice now and added a cup of white chocolate chips- I pushed the chips to the bottom the batter in the baking pan and it made it like a crust for the brownies. So GOOD!!!

  7. 5 stars
    Perfect dessert. I made it with limes and it tasted like key lime pie. Everyone loved it. This is a keeper for sure and easy to make with minimal mess.

  8. 5 stars
    These are SO good! I’d definitely recommend making a double batch! My non gf eaters loved them, too!

      1. 5 stars
        I had to come back and comment again because I am soooo addicted to these darn things!! I took some to work and one of my employees said “oooh what are those can I have a taste?” I am pretty stingy with sweet baked goods but I obliged & now almost every day before work I get a text “we want lemon brownies, pleeeeAaaaaasse” lol we are all addicted now !

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