Blueberry Oatmeal Bars

Published: Jul 2, 2019 · Modified: May 9, 2024 by Naomi Andres · 2 Comments

These easy Blueberry Oatmeal Bars feature a juicy blueberry filling with a buttery brown sugar crust and crumble topping.

Similar to my Raspberry Crumble Bars and Raspberry Chocolate Chip Bars, these oatmeal blueberry bars are like a berry crisp but in bar form! This is a great way to make a yummy homemade dessert with in-season berries in the summertime. Another great recipe to make with fresh summer blueberries is my No-Bake Blueberry Lemon Cheesecake!

If you love baking with blueberries, be sure to try my Blueberry Custard Tarts, Blueberry Pecan Muffins, or Blueberry Turnovers next!

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⭐️ Why You Need to Make This Recipe
🧈 Ingredients
📃 Instructions
💡 Top Tip
❓ Recipe FAQs
🌾 More Oatmeal Recipes
📖 Recipe

⭐️ Why You Need to Make This Recipe

Texture - These bars remind me of a fruit crisp with a pleasant buttery brown sugar oat crumble and juicy blueberry filling.
Flavor - Warm flavors of oats and brown sugar go well with the fruity filling.
Method - These bars are so easy to make and bake in under an hour.

🧈 Ingredients

Here are the ingredients needed to make these oatmeal blueberry bars.

Ingredient Notes

Salted Butter - Add ½ teaspoon of salt if using unsalted butter.
Lemon Juice - This adds some flavor and tartness to the blueberry filling that makes the flavors pop. It also adds liquid to make the blueberry layer more juicy.
Blueberries - Fresh or frozen blueberries can be used. Like in my Cocoa Blueberry Smoothie, you could also use wild blueberries.

See the recipe card for the full list of ingredients with measurements.

📃 Instructions

Oatmeal crumble mixture combined in a glass bowl.

Step 1: Stir together the oats, flour, brown sugar, and baking powder. Add the melted butter and stir until combined and crumbly.

Combined blueberry mixture in a mixing bowl.

Step 2: In another bowl, stir together the blueberries, sugar, cornstarch, lemon juice, and lemon zest.

Oatmeal mixture pressed into the bottom of a baking pan.

Step 3: Firmly press ⅔ of the oatmeal mixture into the bottom of a pan lined with parchment paper.

Blueberry mixture on top of the bottom crust layer.

Step 4: Spread the blueberry mixture over the bottom crust.

Oatmeal crumble sprinkled on top of the blueberry layer.

Step 5: Sprinkle the remaining oatmeal crumble on top of the blueberry layer.

Blueberry squares on a piece of parchment paper with fresh blueberries.

Step 6: Bake in a preheated oven for XX minutes or until the crumble becomes golden brown. Let cool for 20 minutes before lifting out of the pan using the overhanging edges of the parchment paper. Let cool fully before slicing into bars.

💡 Top Tip

Because these blueberry bars are essentially a blueberry crisp in bar form, they would be delicious served warm with ice cream like a fruit crisp! Or serve with whipped cream.

❓ Recipe FAQs

Can I make this recipe gluten-free?

Yes. Use gluten-free flour to make the crumble part gluten-free.

Can I use fresh or frozen blueberries?

Yes, either fresh or frozen blueberries would work for this recipe.

How do you store these bars?

Store covered or in an airtight container at room temperature for up to 3 days.

Can I use raspberries instead of blueberries?

If you want to make bars with raspberries, try my Raspberry Crumble Bars instead!

🌾 More Oatmeal Recipes

Looking for other recipes like this? Try these:

If you tried these Blueberry Oatmeal Crisp Bars or any other recipe on my website, please leave a ⭐️ star rating and write a little note telling me how it went in the comments below. Thank you!!