A Little Sunshine in a Pan
Hello, my dear. It’s Anna. Come sit for a moment. I want to tell you about my Lemon Blueberry Bars. They taste like a bright summer morning. The lemon is zippy. The blueberries are sweet and soft. Together, they sing.
I make these for my grandkids. They gobble them up! I still laugh at that. One time, my youngest grandson had blueberry juice on his chin. He looked like a happy little painter. These bars are that kind of joyful. What dessert makes you feel pure joy?
Why We Mix Zest First
Let me share a secret. The first step is magic. You rub the lemon zest into the sugar. Do this for a full minute. Your kitchen will smell like a lemon grove. Doesn’t that smell amazing?
This matters. It wakes up the lemon oils. It makes the whole crust taste sunny. *Fun fact: The zest holds the strongest lemon flavor, not the juice!* I learned this from my own grandma. She knew that good flavor takes a little patience.
The Berry Swirl
Now, the blueberries. Use fresh or frozen, it’s fine. Toss them gently with a bit of cornstarch. This is our trick. The cornstarch thickens the berry juice as it bakes.
You get a jammy filling, not a soupy one. Spoon the berries over the crust. Leave the extra liquid in the bowl. This little step keeps the bottom crust crisp. Do you prefer your berry desserts tart or very sweet?
Patience is a Warm Kitchen
The hard part is waiting. The bars bake for nearly an hour. They must cool completely too. I know, it’s a test! But this matters for the texture.
If you cut them warm, they will fall apart. Let them set. Use this time to make the simple glaze. Just powdered sugar and a squeeze of lemon. Stir until it’s smooth. The wait makes that first bite even better.
Make It Your Own
This recipe is a friend. It welcomes changes. I use plant-based butter. It works perfectly. You can use regular butter too. The gluten-free flour blend works just like regular here.
Food should fit your life. That’s my cooking rule. These bars are for sharing. They store well in the fridge or freezer. Have you ever changed a recipe to make it just right for you? Tell me about it.
Ingredients:
| Ingredient | Amount | Notes |
|---|---|---|
| Granulated sugar | 3/4 cup (150g) | For the crust |
| Lemon zest | 2 tablespoons | |
| Salted butter, room temperature | 1 cup (227g) | *regular or plant-based |
| Vanilla | 1 teaspoon | |
| Gluten-free flour 1:1 baking blend | 2 1/3 cup (280g) | |
| Fine sea salt | 1/2 teaspoon | |
| Blueberries | 3 cups (444g) | For the filling |
| Lemon juice | 2 tablespoons (30ml) | For the filling |
| Granulated sugar | 1/4 cup (50g) | For the filling |
| Cornstarch | 1 tablespoon (8g) | For the filling |
| Powdered sugar | 1/4 cup (30g) | For the lemon glaze |
| Lemon juice | 1/2 tablespoon | For the lemon glaze |
My Sunshine Lemon Blueberry Bars
Hello, my dear! Come sit at my kitchen table. I want to tell you about these bars. They taste like a sunny summer afternoon. The lemon is bright and cheerful. The blueberries are sweet little bursts of joy.
My granddaughter and I make these every July. We pick the blueberries ourselves. She always sneaks a few into her mouth. I still laugh at that. The recipe is simple and kind to your tummy. It has no gluten or dairy. But it is full of love.
Let’s bake them together. I’ll walk you through each step. Remember, baking is about joy, not perfection. If you make a little mess, that’s just part of the fun. Doesn’t that lemon zest smell amazing already?
Step 1: First, get your pan ready. Heat your oven to 350 degrees. Line your square pan with parchment paper. This makes the bars easy to lift out later. It’s like giving them a little paper bed.
Step 2: Now, let’s wake up the sugar! Rub the lemon zest into the sugar. Use your fingers. This releases the lemon’s sunny oils. (My hard-learned tip: Use room temperature butter. It mixes so much better!). Your kitchen will smell like a lemon grove.
Step 3: Beat that butter and lemony sugar together. Use a mixer if you have one. Beat it until it looks light and fluffy. This takes a few minutes. Add the vanilla for a warm hug of flavor.
Step 4: Gently mix in your flour and salt. Just mix until it looks crumbly. Like wet sand. This is your dough. Press most of it into your pan. Save a handful for the top. What’s your favorite summer berry? Share below!
Step 5: Time for the blueberries! Toss them with sugar, lemon juice, and cornstarch. The cornstarch thickens the juices. Spoon them over your dough base. Try to leave the extra liquid behind.
Step 6: Take your saved dough. Crumble it over the blueberry layer. It will look so pretty. Bake it for about an hour. It’s done when the top is golden. Let it cool completely. This is the hardest part—waiting!
Step 7: The final touch! Mix a little powdered sugar and lemon juice. Drizzle it over the cooled bars. Then, cut them into squares. Enjoy that first sweet, tangy bite. You did it!
Cook Time: About 1 hour
Total Time: 1 hour 30 minutes (plus cooling)
Yield: 9 generous bars
Category: Dessert, Snack
Three Fun Twists to Try
Once you master the classic, you can play! Here are three ideas. They are all delicious in their own way.
Raspberry Lemonade Twist: Swap the blueberries for raspberries. They are tart and beautiful. It tastes like pink lemonade in a bar.
Lavender Dream: Add one teaspoon of dried lavender to the sugar. Rub it with the lemon zest. It feels so fancy and calm.
Citrus Sunshine Mix: Use a mix of berries. Try blueberries and blackberries. The colors are just gorgeous together.
Which one would you try first? Comment below!
Serving with a Smile
These bars are wonderful all on their own. But you can make them extra special. I love to serve them on my blue china plate. It makes the colors pop.
For a real treat, add a scoop of coconut milk ice cream. The cold and creamy is perfect. Or just dust them with a little extra powdered sugar. It looks like a light snowfall.
What to drink? I love iced herbal tea with mint. It’s so refreshing. For a grown-up pairing, a glass of chilled Riesling wine is lovely. It’s sweet like the berries.
Which would you choose tonight?

Keeping Your Lemon Blueberry Bars Fresh
These bars keep well. Store them in the fridge for five days. You can also freeze them for three months. Just wrap them tightly first.
I love making a double batch. I freeze one pan for later. It is perfect for surprise guests. I remember my first time freezing them.
I was so worried they would get soggy. They thawed perfectly on the counter. My grandson couldn’t tell the difference. Storing food well saves time and money.
It means a sweet treat is always ready. Have you ever tried storing it this way? Share below!
Simple Fixes for Common Baking Hiccups
Sometimes the dough seems too crumbly. Do not worry. Just use your fingers to press it. It will come together in the pan.
The filling might look too juicy. Leave the extra liquid in the bowl. This keeps the base from getting wet. I once added all the juice.
The bottom was a bit soft. Learning this fix changed my baking. The bars bake more evenly. Your treat will have the right texture.
The top might brown too fast. If it does, lay foil over the pan. This lets the middle cook without burning. Fixing small problems builds your confidence.
You learn to trust your eyes. Which of these problems have you run into before?
Your Quick Questions, Answered
Q: Can I use regular flour? A: Yes, use the same amount of all-purpose flour if you do not need gluten-free.
Q: Can I make these ahead? A: Absolutely. Bake them a day before you need them. They taste great the next day.
Q: What plant-based butter works best? A: I use the sticks meant for baking. They work just like regular butter.
Q: Can I double the recipe? A: Yes. Use a 9×13 inch pan. The baking time might be a little longer.
Q: Is the glaze necessary? A: No, but it adds a nice tang. *Fun fact: A little lemon zest in the glaze looks pretty. Which tip will you try first?
Bake, Share, and Enjoy
I hope you love making these sunny bars. They always remind me of summer mornings. Baking is about sharing joy with others.
I would love to see your creation. Have you tried this recipe? Tag us on Pinterest! You can find me at @AnnaWhitmoreBakes. Share a photo of your kitchen masterpiece.
Happy cooking!
—Anna Whitmore.

Gluten Free Lemon Blueberry Bars Dairy Free
Description
Easy, healthy lemon blueberry bars with a gluten-free oat crust! Perfect for spring, summer, or any sweet craving. No dairy needed.
Ingredients
Filling
Lemon Glaze
Instructions
- Preheat the oven to 350ºF and prepare an 8×8-inch baking pan with non-stick baking spray and two pieces of parchment paper crisscrossed.
- In the bowl of a stand mixer or a large mixing bowl with an electric mixer, beat the sugar and lemon zest on high speed for 1 minute.
- Add the butter and vanilla and beat together on high for 2-3 minutes or until light and fluffy.
- Add in the flour and salt and mix on low until a crumbly dough forms.
- Place ⅔ of the dough into the prepared pan and press down evenly. Set aside.
- In a small mixing bowl, combine the blueberries, sugar, lemon juice, and cornstarch and gently toss together.
- Spoon the blueberry mixture on top of the shortbread base and spread evenly, making sure to leave any excess liquid in the bowl.
- Crumble the remaining dough over the blueberries and bake for approximately 60 minutes or until lightly golden on top.
- Remove from the oven and allow to cool fully in the pan.
- In a small mixing bowl, add the powdered sugar and lemon juice and mix until combined and smooth.
- Top the cooled lemon blueberry bars with a drizzle of lemon glaze and slice into squares. Enjoy!
Notes
- Store leftover lemon blueberry bars in an airtight container in the refrigerator for up to 5 days or in the freezer for up to 3 months.






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