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Breakfast / Blueberry Oatmeal Breakfast Bars: The Perfect Grab-and-Go Recipe

Blueberry Oatmeal Breakfast Bars: The Perfect Grab-and-Go Recipe

May 31, 2025 by JannaBreakfast

Blueberry Oatmeal Breakfast Bars: the perfect grab-and-go breakfast solution for busy mornings! Imagine sinking your teeth into a chewy, subtly sweet bar bursting with juicy blueberries and the wholesome goodness of oats. Forget those bland, processed breakfast bars from the store; we’re talking about homemade deliciousness that will actually keep you full and energized until lunchtime.

Oatmeal bars, in general, have a long history as a hearty and convenient food source. Variations have been enjoyed by travelers and adventurers for centuries, providing sustained energy on the go. But the addition of blueberries elevates these bars to a whole new level. Blueberries, native to North America, have been prized for their vibrant flavor and health benefits by indigenous populations for generations. They add a touch of sweetness and a burst of antioxidants to this already nutritious treat.

What makes these Blueberry Oatmeal Breakfast Bars so irresistible? It’s the delightful combination of textures – the soft chewiness of the oats, the juicy pop of the blueberries, and the slight crispness around the edges. Plus, they are incredibly easy to customize with your favorite nuts, seeds, or spices. People love them because they are a healthy, satisfying, and convenient way to start the day, and they are a fantastic way to use up those summer blueberries. So, ditch the sugary cereals and embrace the goodness of homemade!

Blueberry Oatmeal Breakfast Bars this Recipe

Ingredients:

  • For the Oatmeal Base:
    • 3 cups rolled oats (not instant)
    • 1 cup all-purpose flour
    • 1 teaspoon baking soda
    • 1 teaspoon ground cinnamon
    • 1/2 teaspoon salt
    • 1 cup (2 sticks) unsalted butter, melted
    • 3/4 cup packed light brown sugar
    • 1/2 cup granulated sugar
    • 2 large eggs
    • 1 teaspoon vanilla extract
  • For the Blueberry Filling:
    • 4 cups fresh blueberries (or frozen, thawed and drained)
    • 1/4 cup granulated sugar
    • 2 tablespoons cornstarch
    • 1 tablespoon lemon juice
    • 1/2 teaspoon lemon zest (optional)
  • Optional Topping:
    • 1/2 cup rolled oats
    • 1/4 cup all-purpose flour
    • 1/4 cup packed light brown sugar
    • 1/4 cup cold unsalted butter, cut into small pieces

Preparing the Blueberry Filling:

  1. In a medium saucepan, combine the blueberries, granulated sugar, cornstarch, lemon juice, and lemon zest (if using).
  2. Place the saucepan over medium heat and cook, stirring constantly, until the blueberries begin to release their juices and the mixture thickens. This usually takes about 5-7 minutes. Be patient and keep stirring to prevent burning. You’ll notice the mixture becoming glossy and more like a jam.
  3. Once the filling has thickened, remove it from the heat and set it aside to cool slightly while you prepare the oatmeal base. Cooling it slightly will prevent it from making the oatmeal base soggy.

Making the Oatmeal Base:

  1. Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan. You can also line the pan with parchment paper, leaving an overhang on the sides, for easy removal of the bars later. This is my preferred method!
  2. In a large bowl, whisk together the rolled oats, flour, baking soda, cinnamon, and salt. Make sure everything is well combined. This ensures that the baking soda and cinnamon are evenly distributed throughout the bars.
  3. In a separate bowl, whisk together the melted butter, brown sugar, and granulated sugar until well combined. The mixture should be smooth and creamy.
  4. Add the eggs and vanilla extract to the butter and sugar mixture and whisk until everything is fully incorporated. Don’t overmix at this stage.
  5. Pour the wet ingredients into the dry ingredients and stir until just combined. Be careful not to overmix the batter, as this can result in tough bars. A few streaks of flour are okay.

Assembling and Baking the Bars:

  1. Press half of the oatmeal mixture into the prepared baking pan. Use your fingers or the back of a spoon to create an even layer. This will form the base of your bars.
  2. Spread the blueberry filling evenly over the oatmeal base. Make sure to distribute the filling all the way to the edges of the pan.
  3. Sprinkle the remaining oatmeal mixture evenly over the blueberry filling. If you’re using the optional topping, prepare it now.

Preparing the Optional Topping (If Using):

  1. In a small bowl, combine the rolled oats, flour, and brown sugar.
  2. Cut in the cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs. The colder the butter, the better the topping will be.
  3. Sprinkle the topping evenly over the oatmeal layer.

Baking the Bars:

  1. Bake in the preheated oven for 30-35 minutes, or until the top is golden brown and the blueberry filling is bubbly. Keep an eye on them, as baking times can vary depending on your oven.
  2. Remove the pan from the oven and let the bars cool completely in the pan before cutting. This is important, as the bars will be easier to cut and hold their shape better when they are cool. If you used parchment paper, lift the bars out of the pan using the overhang.
  3. Once the bars are completely cool, cut them into squares or rectangles. I like to use a sharp knife to get clean cuts.

Tips and Variations:

  • Use Frozen Blueberries: If fresh blueberries are not available, you can use frozen blueberries. Thaw them completely and drain off any excess liquid before using them in the filling. This will prevent the filling from being too watery.
  • Add Nuts: For added crunch and flavor, you can add chopped nuts, such as pecans or walnuts, to the oatmeal base or the topping.
  • Lemon or Orange Zest: Enhance the flavor of the bars by adding lemon or orange zest to the oatmeal base or the blueberry filling.
  • Different Fruits: Feel free to experiment with other fruits in the filling, such as raspberries, strawberries, or blackberries. Adjust the amount of sugar as needed, depending on the sweetness of the fruit.
  • Make it Gluten-Free: To make these bars gluten-free, use a gluten-free all-purpose flour blend in place of the regular flour. Make sure to choose a blend that contains xanthan gum for best results. Also, ensure that your rolled oats are certified gluten-free.
  • Storage: Store the baked bars in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week. You can also freeze them for longer storage. Wrap them individually in plastic wrap and then place them in a freezer bag.
  • Serving Suggestions: These bars are delicious on their own as a breakfast or snack. You can also serve them with a dollop of yogurt or a scoop of ice cream for a more decadent treat.

Troubleshooting:

  • Bars are too dry: Make sure you are using the correct amount of butter and sugar. Also, avoid overbaking the bars.
  • Bars are too soggy: Ensure that you drain any excess liquid from the blueberries if using frozen. Also, let the bars cool completely before cutting them.
  • Bars are not holding their shape: Make sure you press the oatmeal base firmly into the pan. Also, let the bars cool completely before cutting them.
  • Topping is burning: If the topping is browning too quickly, tent the pan with aluminum foil during the last 10-15 minutes of baking.

Nutritional Information (Approximate):

Please note that the nutritional information is an estimate and may vary depending on the specific ingredients used and portion sizes.

  • Calories: Approximately 250-300 per bar
  • Fat: 12-15 grams
  • Saturated Fat: 7-9 grams
  • Cholesterol: 40-50 mg
  • Sodium: 150-200 mg
  • Carbohydrates: 35-40 grams
  • Fiber: 3-4 grams
  • Sugar: 15-20 grams
  • Protein: 4-5 grams

Enjoy your homemade Blueberry Oatmeal Breakfast Bars! I hope you find this recipe easy to follow and that the bars turn out delicious. Let me know in the comments if you have any questions or if you try any variations!

Blueberry Oatmeal Breakfast Bars

Conclusion:

And there you have it! These Blueberry Oatmeal Breakfast Bars are truly a game-changer for busy mornings, satisfying snacks, or even a healthier dessert option. I genuinely believe this recipe is a must-try for anyone looking to incorporate more wholesome goodness into their diet without sacrificing flavor or convenience. The combination of chewy oats, juicy blueberries, and a hint of sweetness creates a symphony of textures and tastes that will leave you wanting more. But why is this recipe so special? It’s more than just a collection of ingredients; it’s a testament to how simple, real food can be incredibly delicious and nourishing. Unlike store-bought bars that are often loaded with processed sugars and artificial additives, these homemade bars are packed with fiber, antioxidants, and sustained energy to fuel your day. Plus, the satisfaction of knowing you created something so delicious from scratch is simply unbeatable. Beyond the basic recipe, the possibilities are endless! Feel free to experiment with different variations to suit your preferences. For a nuttier flavor, add a handful of chopped walnuts or pecans to the batter. If you’re a fan of citrus, a teaspoon of lemon zest will brighten the blueberry flavor beautifully. Craving something a little richer? A drizzle of melted dark chocolate over the cooled bars is pure indulgence. You could even swap out the blueberries for other berries like raspberries or strawberries, or add dried cranberries for a festive twist. Serving suggestions are just as versatile. Enjoy these bars straight from the fridge for a cool and refreshing treat, or warm them up slightly in the microwave for a cozy and comforting snack. They’re perfect for packing in lunchboxes, taking on hikes, or enjoying with a cup of coffee or tea. I personally love crumbling them over yogurt or ice cream for a delightful breakfast or dessert parfait. I’ve poured my heart into perfecting this recipe, and I’m confident that you’ll love it as much as I do. The beauty of these Blueberry Oatmeal Breakfast Bars lies in their simplicity and adaptability. They’re a blank canvas for your culinary creativity, so don’t be afraid to experiment and make them your own. So, what are you waiting for? Gather your ingredients, preheat your oven, and get ready to embark on a baking adventure that will reward you with a batch of delicious and nutritious bars. I promise you won’t regret it! And most importantly, I’d love to hear about your experience! Once you’ve tried this recipe, please share your thoughts, variations, and photos in the comments below. Did you make any substitutions? Did you add any special ingredients? What did your family and friends think? Your feedback is invaluable and helps me continue to create recipes that you’ll love. Let’s build a community of bakers who appreciate the joy of homemade goodness! Happy baking! Print
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Blueberry Oatmeal Breakfast Bars: The Perfect Grab-and-Go Recipe


  • Total Time: 55 minutes
  • Yield: 12–16 bars 1x
Print Recipe
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Description

Easy blueberry oatmeal bars for breakfast, snacks, or dessert. Chewy oatmeal base with sweet blueberry filling and optional crumb topping.


Ingredients

Scale
  • 3 cups rolled oats (not instant)
  • 1 cup all-purpose flour
  • 1 teaspoon baking soda
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon salt
  • 1 cup (2 sticks) unsalted butter, melted
  • 3/4 cup packed light brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 4 cups fresh blueberries (or frozen, thawed and drained)
  • 1/4 cup granulated sugar
  • 2 tablespoons cornstarch
  • 1 tablespoon lemon juice
  • 1/2 teaspoon lemon zest (optional)
  • 1/2 cup rolled oats
  • 1/4 cup all-purpose flour
  • 1/4 cup packed light brown sugar
  • 1/4 cup cold unsalted butter, cut into small pieces

Instructions

  1. Prepare the Blueberry Filling: In a medium saucepan, combine the blueberries, granulated sugar, cornstarch, lemon juice, and lemon zest (if using). Place the saucepan over medium heat and cook, stirring constantly, until the blueberries begin to release their juices and the mixture thickens (5-7 minutes). Remove from heat and let cool slightly.
  2. Make the Oatmeal Base: Preheat oven to 350°F (175°C). Grease a 9×13 inch baking pan (or line with parchment paper). In a large bowl, whisk together the rolled oats, flour, baking soda, cinnamon, and salt. In a separate bowl, whisk together the melted butter, brown sugar, and granulated sugar until well combined. Add the eggs and vanilla extract and whisk until fully incorporated. Pour the wet ingredients into the dry ingredients and stir until just combined.
  3. Assemble and Bake: Press half of the oatmeal mixture into the prepared baking pan. Spread the blueberry filling evenly over the oatmeal base. Sprinkle the remaining oatmeal mixture evenly over the blueberry filling. If using the optional topping, prepare it now and sprinkle over the oatmeal layer.
  4. Prepare the Optional Topping (If Using): In a small bowl, combine the rolled oats, flour, and brown sugar. Cut in the cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs.
  5. Bake: Bake in the preheated oven for 30-35 minutes, or until the top is golden brown and the blueberry filling is bubbly.
  6. Cool and Cut: Remove from oven and let cool completely in the pan before cutting into squares or rectangles.

Notes

  • Use Frozen Blueberries: If fresh blueberries are not available, you can use frozen blueberries. Thaw them completely and drain off any excess liquid before using them in the filling. This will prevent the filling from being too watery.
  • Add Nuts: For added crunch and flavor, you can add chopped nuts, such as pecans or walnuts, to the oatmeal base or the topping.
  • Lemon or Orange Zest: Enhance the flavor of the bars by adding lemon or orange zest to the oatmeal base or the blueberry filling.
  • Different Fruits: Feel free to experiment with other fruits in the filling, such as raspberries, strawberries, or blackberries. Adjust the amount of sugar as needed, depending on the sweetness of the fruit.
  • Make it Gluten-Free: To make these bars gluten-free, use a gluten-free all-purpose flour blend in place of the regular flour. Make sure to choose a blend that contains xanthan gum for best results. Also, ensure that your rolled oats are certified gluten-free.
  • Storage: Store the baked bars in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week. You can also freeze them for longer storage. Wrap them individually in plastic wrap and then place them in a freezer bag.
  • Serving Suggestions: These bars are delicious on their own as a breakfast or snack. You can also serve them with a dollop of yogurt or a scoop of ice cream for a more decadent treat.
  • Prep Time: 20 minutes
  • Cook Time: 30 minutes

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