Blueberry Oatmeal Breakfast Bars Recipe
Introduction
These Blueberry Oatmeal Breakfast Bars are a delicious and wholesome way to start your day. Packed with fresh blueberries and a crumbly oat base, they’re perfect for a quick breakfast or a healthy snack on the go.

Ingredients
- 1 cup old-fashioned oats
- 3/4 cup all-purpose flour (or gluten-free flour blend)
- 1/3 cup light brown sugar
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 teaspoon cinnamon (optional)
- 6 tablespoons unsalted butter, melted (or coconut oil)
- 1 teaspoon vanilla extract
- 1 cup blueberries (fresh or frozen)
- 1/4 cup granulated sugar
- 2 teaspoons cornstarch
Instructions
- Step 1: Preheat the oven to 375°F (190°C). Line an 8-inch square baking pan with parchment paper, leaving some overhang for easy removal.
- Step 2: In a large bowl, mix together oats, flour, brown sugar, baking soda, salt, and cinnamon (if using).
- Step 3: Stir in melted butter and vanilla extract until the mixture is crumbly.
- Step 4: Press half of the oat mixture firmly into the bottom of the prepared pan to form a base.
- Step 5: In a separate bowl, toss blueberries with granulated sugar and cornstarch. Spread the blueberry mixture evenly over the oat base.
- Step 6: Crumble the remaining oat mixture over the blueberries, gently pressing down.
- Step 7: Bake for 35-40 minutes, or until the top is golden brown and the blueberries are bubbly.
- Step 8: Allow the bars to cool completely in the pan on a wire rack. Once cooled, use the parchment paper overhang to lift the bars out of the pan and cut into squares.
Tips & Variations
- For a nutty flavor, add 1/4 cup chopped walnuts or pecans to the oat mixture before baking.
- Try substituting the blueberries with raspberries or chopped strawberries for a different berry twist.
- Use coconut oil instead of butter for a dairy-free version.
- If using frozen blueberries, do not thaw before mixing to prevent excess moisture in the bars.
Storage
Store the blueberry oatmeal bars in an airtight container at room temperature for up to 3 days. For longer storage, keep them refrigerated for up to one week or freeze for up to 3 months. To reheat, warm a bar in the microwave for 15-20 seconds or enjoy chilled.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use gluten-free oats and flour for this recipe?
Yes, you can use certified gluten-free oats and a gluten-free flour blend to make these bars gluten-free without compromising the texture or taste.
How do I prevent the bars from being too soggy?
Be sure not to overmix the blueberry filling and use cornstarch as directed to help thicken the fruit juices. Also, pressing the oat mixture firmly on top helps keep the bars intact.
PrintBlueberry Oatmeal Breakfast Bars Recipe
Delicious and wholesome Blueberry Oatmeal Breakfast Bars featuring a crumbly oat base and a juicy blueberry filling. Perfect as a grab-and-go breakfast or snack, these bars combine the heartiness of oats with the natural sweetness of blueberries in a lightly spiced, baked treat.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Total Time: 50 minutes
- Yield: 9 bars 1x
- Category: Breakfast
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Dry Ingredients
- 1 cup old-fashioned oats
- 3/4 cup all-purpose flour (or gluten-free flour blend)
- 1/3 cup light brown sugar
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 teaspoon cinnamon (optional)
Wet Ingredients
- 6 tablespoons unsalted butter, melted (or coconut oil)
- 1 teaspoon vanilla extract
Blueberry Filling
- 1 cup blueberries (fresh or frozen)
- 1/4 cup granulated sugar
- 2 teaspoons cornstarch
Instructions
- Preheat and Prepare Pan: Preheat the oven to 375°F (190°C). Line an 8-inch square baking pan with parchment paper, leaving some overhang to easily lift the bars out after baking.
- Mix Dry Ingredients: In a large bowl, combine oats, flour, light brown sugar, baking soda, salt, and optional cinnamon. Stir until well mixed.
- Add Wet Ingredients: Pour in the melted butter and vanilla extract into the dry mixture. Stir well until the mixture becomes crumbly and evenly combined.
- Form the Base: Press half of the oat mixture firmly into the bottom of the prepared pan, creating an even and compact base layer.
- Prepare Blueberry Filling: In a separate bowl, toss the blueberries with granulated sugar and cornstarch until fully coated. Spread this blueberry mixture evenly over the oat base layer in the pan.
- Add Crumble Topping: Crumble the remaining oat mixture over the blueberry topping, gently pressing it down to cover the berries evenly.
- Bake: Place the pan in the preheated oven and bake for 35-40 minutes, or until the top is golden brown and the blueberries are bubbly and cooked through.
- Cool and Serve: Remove from the oven and let the bars cool completely in the pan on a wire rack. Once cooled, use the parchment paper overhang to lift the bars out and cut into squares for serving.
Notes
- For a gluten-free version, use a certified gluten-free flour blend.
- Frozen blueberries can be used; do not thaw before mixing to prevent excess moisture.
- The cinnamon is optional but adds a warm spice flavor that complements the blueberries.
- Store bars in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
- These bars can be frozen for up to 2 months; thaw before serving.
Keywords: blueberry oatmeal bars, breakfast bars, healthy breakfast, baked oatmeal bars, blueberry snack bars, vegetarian breakfast

