These incredible Gluten Free Lemon Brownies are topped with creamy lemonade icing. They are decadent, flavorful, and so easy to make!
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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 brownie 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!
Why these gluten-free lemon brownies are the best:
- These lemony gluten free lemon brownies are bursting with sweet, tart lemon flavors.
- These brownies are soft and delicious. All you need are 7 simple ingredients!
- 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.
I made these with oranges instead of lemons as that is what I had in the house and I couldn’t wait to make them – lol. They were FANTASTIC! My husband (who is not gluten free) couldn’t get enough of them. These will be a new family favorite for sure. Thanks so much for this recipe!”
ella, blog comment
Allergen Information:
These homemade lemon brownies are gluten-free, soy-free, nut-free, and oat-free. They can also be made dairy-free using plant-based butter.
Ingredient Notes:
For the full list of ingredients and amounts, please go to the recipe card below.
- Gluten-free flour blend: I tested this recipe using Bob’s Red Mill 1 to 1, Pillsbury Gluten-Free Flour Blend, and King Arthur’s Measure for Measure. One reader reported Better Batter brand also works well. 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 – Use unsalted 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.
Step-By-Step Photos and Directions:
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.
Step 3: Pour the wet ingredients into the dry ingredients. Mix with a spoon to combine them.
👀 Sandi Says: You can also use a standing mixer to mix the dough if you prefer.
Step 4: This is what your lemon brownie batter should look like.
📢 Sandi says: Every gluten-free flour blend has a different starch-to-grain ratio. The brand of gluten-free flour you use will affect the moisture of the batter. If your cake batter is too runny, add more flour, and if it is too thick, add more liquids.
Read Why Gluten-Free Flour Blends Vary to learn more about this.
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Step 5: Line your 8×8 metal 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 20-25 minutes at 350º F. Remove from the oven and allow the gluten free lemon brownies to cool.
Step 7: Add the powdered sugar and lemon juice to a bowl. Whisk to blend the glaze.
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!
Fun flavor 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!
Frequently Asked Questions:
Yes, you can definitely double the recipe and make a 9×13 pan full of lemon brownies!
You don’t need baking powder because you want the brownies to be dense and moist.
I always store gluten free baked goods like these lemon brownies in the refrigerator. Keep them in an airtight container.
The extra lemon brownies can easily be frozen. Place the cooled brownies in a freezer-safe container or zip-style baggie.
You can use as much or as little lemon glaze as you like. They taste delicious plain, too, without the icing!
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!
This recipe is amazing! I’ve made it a few times. YUM.”
Barbara F.
More Gluten Free Brownie Recipes:
- Paleo Brownies – hidden veggies!
- Gluten Free Peppermint Brownies
- Easy Gluten Free Brownie Cookies
- Gluten Free Brownie Cheesecake Bars
- Decadent Gluten Free Espresso Brownies
Love This Recipe?
If you made and enjoyed this recipe, I would be incredibly grateful if you could leave a comment below. Please include which flour blend you used. This will help others know this recipe is delicious. Thank you!
Gluten Free Lemon Brownies
Equipment
- Whisk
Ingredients
- 1 ¼ cups gluten free flour blend * see note, you may need more or less flour!
- 1 cup cane sugar
- ½ teaspoon salt
- 2 large eggs
- 8 tablespoons unsalted butter partially melted
- ¼ cup lemon juice
- 1 tablespoon lemon zest
- 1 teaspoon pure vanilla extract OPTIONAL
Lemonade Glaze
- 1 ¼ cups powdered sugar
- 2-3 tablespoons lemon juice more if needed
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Instructions
- Preheat the oven to 350º F.
- In a large mixing bowl, add 1 1/4 cups gluten free flour blend, 1 cup cane sugar, 1/2 teaspoon salt, and whisk to blend.
- Place the 8 tablespoons unsalted butter into a microwave-safe dish and microwave it for 30 seconds to partially melt it.
- Add 1/4 cup lemon juice, 1 tablespoon lemon zest, 2 large eggs, and 1 teaspoon pure vanilla extract 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 1 1/4 cups powdered sugar and 2-3 tablespoons lemon juice in a small mixing bowl and spread the lemonade icing over the cooled brownies. Enjoy!
Notes
- 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.
- Xanthan Gum – If your gluten free flour blend doesn’t contain xanthan gum or guar gum, please add 1 teaspoon.
- To make this recipe dairy-free, substitute the butter for vegan butter.
- 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.
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, my rule of thumb is to add more flour if your dough or batter is wet and add more liquid if the dough or batter is too dry!
Nutrition
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.
Can these be made by subbing honey or maple syrup for the sugar??
Hi Andrea, I have not tested any liquid sweeteners. Doing so will change the liquid and dry ratios quite a bit.
For some reason, these did not work out so well for me. I used Bob’s Red Mill 1:1 GF flour, like I do for most recipes. I found them to be dense and not chewy or flavorful. It could be user error! I might try them again, this time with baking soda. The frosting was great though!
Hi Christa, I am sorry you had trouble with this recipe. I know that blend works in this recipe. Did you swap any ingredients? My guess is user error given hundreds have made this recipe and loved it. I am not sure it is fair to give this recipe a low star rating if you are unsure if you think you had a user error making it.
Super easy and almost fail proof for a novice baker like me. Simple ingredients, forgiving texture and delicious flavors. Made it for the first time for my mom’s group and they asked for the recipe. Will forward your link. Thank you!
I am thrilled everyone loved these lemon brownies. Thank you so much for introducing your mom’s group to my recipe!
I just made this with Trader Joe’s GF AP flour and Bob’s Red Mill egg replacement. I used a large Meyer lemon and vanilla extract. I can understand why you would use other GF flours, they are more readily available for people.
It sounds like the egg replacer worked well. I appreciate your coming back to let me know that the Trader Joe’s flour blend worked in this recipe.
Can you make a suggestion for high altitude adjustment?
Hi Rebekah, I have no experience with high altitude baking. A few months ago, I asked my Facebook group for tips. This is a compilation of their recommendations. I hope this can help you.
High Altitude Tips:
My cakes and cookies need to be baked at 375 not 350. What works best where I am is the 25/25 method. Bake at 25 degrees higher than the recipe – this helps the outside cook faster as it rises and the middle won’t sink in later. Also, bake for 20-25minutes less. Depending on what you’re making you can also add a little extra flour or baking soda. But for baked goods like cakes, muffins etc I add a little extra liquid and usually an extra egg and I cut back a little on baking powder or soda (so if it says 1 1/2 tsp baking soda I’ll do 1 tsp). I also bake at a slightly higher temperature so instead of 350F I’ll do 370F for the first part then drop it back down to 350F.
I made them today, delicious!! I used Meyer lemons, and also popped them in the fridge to set up the glaze because it was a hot day.
I love that you used meyer lemons. Thank you so much for coming back to let me know you enjoyed these brownies!
So I made these brownies today for the Fourth of July and they are about an eighth of an inch thick???? . I have not tasted them yet. Did I do something wrong?😥
Hi Rhonda, What gluten free flour blend did you use, and what size pan did you use?
These were delicious! Even my non-gluten-free husband enjoyed them. I replaced the eggs with half a cup of applesauce, and they turned out perfect.
Wow, thank you so much for writing to let me know the applesauce worked in place of the eggs…I am sure that will help many readers. Thank you!