These flourless (gluten-free) Blueberry Oatmeal Bars are soft, chewy, and packed with oats and dried blueberries, then finished with a sweet vanilla glaze.

Image of the blueberry oatmeal squares cut in squares with one of them sitting up showing the inside

A Great Wholesome Snack!

These blueberry oatmeal bars are soft, chewy, and bursting with sweet-tart dried blueberries. They’re like a mash-up of soft granola bars and a bowl of oatmeal—thick, chewy, and wholesome.

Skip the glaze for a lower-sugar option.

How To Make Blueberry Oatmeal Bars

  1. Combine all the oatmeal bar ingredients (except the blueberries) in a large bowl
  2. Mix ingredients until well combined
  3. Add in dried blueberries
  4. Fold with a spatula to mix in the berries
  5. Transfer batter to a lined 8×8 pan
  6. Bake until lightly browned at the edges and firm in the center
Process shots-- images of all the ingredients being added to a bowl, mixed together, the blueberries being added, and then it being poured into a prepared pan and baked

Blueberry Oatmeal Bars ingredients

  • Old fashioned oats: Don’t use quick oats (they won’t work well), and steel-cut oats stay too hard.
    Oat flour: No need to buy it—just grind quick or old-fashioned oats into a flour.
    Cinnamon: Use more or less if you want.
    Salt: Helps all the flavors taste better.
    Peanut butter: Creamy almond butter should also work.
    Coconut oil: Helps the bars stay soft and taste good.
    Honey: The main sweetener.
    Light brown sugar: Just 1/3 cup makes the bars sweeter and less sticky.
    Vanilla extract: Makes the bars taste better.
    Egg + egg yolk: Helps the bars hold together and taste good. You can use the extra egg white in this egg wrap.
    Dried blueberries: Only use dried blueberries so the bars don’t get soggy—don’t use fresh or frozen.

How To Make Oat “Flour”

If you have quick oats or old fashioned oats, you can have oat flour ready for these blueberry oatmeal bars in an instant!

  1. Place the oats (you can use old fashioned or quick oats) into the bowl of your food processor or small blender jar.
  2. Pulse the oats until ground into a powder-like consistency that resembles flour.
  3. Stir the oats around if needed to be sure all the oats are finely ground and there aren’t any full oats left. 
  4. Make sure to measure your oat flour after it’s been turned to flour and not in the original whole oat form.
Image of the glaze being made and then added on top of the bars

Blueberry Oatmeal Bars tips

  • Line the pan: Use parchment with overhang—these bars stick and are tough to remove without it.
  • Cool completely: They’re gooey and crumbly when hot but firm up as they cool. Glaze melts and gets messy on warm bars.
  • Don’t over-bake: Remove when edges are lightly browned. The center may look a bit wet, but if it doesn’t jiggle, it’s done. Over-baking makes them dry.

Storage

Store these blueberry oatmeal bars in an airtight bag or container at room temperature. These bars are best enjoyed within 2-3 days of making. Leftovers can be frozen and later thawed at room temperature.

To freeze: wrap individual bars tightly in plastic wrap and then place individually wrapped bars in an airtight freezer-safe container.

Overhead image of the blueberry oatmeal bars with glaze on top

More Healthy Snacks:

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5 from 2 votes

Blueberry Oatmeal Bars

These flourless (gluten free—see note 1) blueberry oatmeal bars are soft, chewy, and packed with oats and dried blueberries. Made with wholesome ingredients, they’re finished with a sweet vanilla glaze!
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Servings: 12 bars

Video

Ingredients

Blueberry Oatmeal Bars
  • 1 cup old fashioned oats
  • 1/3 cup oat flour oats that have been blended
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon salt
  • 1/3 cup creamy peanut butter
  • 1/4 cup melted coconut oil
  • 1/4 cup honey
  • 1/3 cup light brown sugar lightly packed
  • 1 teaspoon vanilla extract
  • 1 large egg
  • 1 large egg yolk save the whites for another recipe or discard them
  • 3/4 cup dried blueberries
Glaze (Optional)
  • 3/4 teaspoon vanilla extract
  • 1/2 cup powdered sugar
  • 1/16 teaspoon salt
  • 1/2 to 3/4 tablespoon milk any milk works; I used whole milk

Instructions 

For the bars:

  • Preheat oven to 325°F. Line an 8×8-inch baking pan with parchment paper with an overhang. (These will be near impossible to get out without it.)
  • To make oat flour, just place old fashioned or quick oats in a blender and pulse until they resemble flour. Measure after blending to make sure you have the right amount.
  • Combine all oatmeal bar ingredients except dried blueberries in a large bowl and stir until smooth and well combined. Add in dried blueberries and stir. Transfer batter to prepared pan.
  • Bake 23–26 minutes or until set at the edges (it does look slightly wet in the center, but as long as it doesn’t jiggle, it’s done). The bars will firm up as they cool; be careful not to overbake.

For the vanilla drizzle:

  • Combine all glaze ingredients in a medium bowl, starting with only 1/2 tablespoon milk. Whisk briskly until a very thick glaze forms. Add up to 3/4 tablespoon milk if needed.
  • Transfer glaze to a plastic resealable bag and cut off the very tip. Once bars have cooled, drizzle glaze over the bars.
Final step! Please let us know how it was by leaving a review.

Recipe Notes

Note 1: These bars are naturally gluten free, but ensure all products you use are indeed gluten free and aren’t processed in an environment with other gluten products.
Storage: Store these blueberry oatmeal bars in an airtight bag or container at room temperature. These bars are best enjoyed within 2–3 days. Leftovers can be frozen and later thawed at room temperature. To freeze, wrap individual bars tightly in plastic wrap, then place individually wrapped bars in an airtight freezer-safe container.

Nutrition

Serving: 1serving | Calories: 207kcal | Carbohydrates: 28.6g | Protein: 3.8g | Fat: 9.1g | Cholesterol: 23.3mg | Sodium: 41.8mg | Fiber: 1.9g | Sugar: 19.3g

Nutrition information is automatically calculated, so should only be used as an approximation.

Meet Chelsea


Hello, and welcome to Chelsea’s Messy Apron! I’m Chelsea, the recipe developer, food photographer, and writer behind the site. I’m passionate about creating simple, reliable, and delicious recipes that anyone can make.

Thanks for stopping by—I hope you find something delicious to make!

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22 Comments

  1. Sasha Torkildson says:

    These are fantastic! Nice recipe. Not a lot of sugar and were even sweet enough without the drizzle. Will definitely keep this one on hand!

    1. chelseamessyapron says:

      So glad to hear you enjoyed these!! I’m thrilled 🙂

  2. Megan - The Emotional Baker says:

    I made your original version and loved them! I’m sure these will be no exception!

  3. Michele @ TwoRaspberries says:

    These look amazing! Plus I love that they are soft and not hard/dry I was never much for the blueberry ones either but these definitely look much better! And you should totally do a Clif Z bar copy I love them too 🙂

  4. Amber@twobirdperch says:

    Chelsea, these look so much softer than the NV bars & undoubtedly much better for you! Thanks for sharing!

  5. Olivia - Primavera Kitchen says:

    These sound amazing, Chelsea. I love that they don’t have lots of sugar. I think your homemade version of the natural valley bar looks more delicious than the original one 🙂

  6. Ilona says:

    Yum! These will be perfect for school lunches. Such a delicious oatmeal bars:)

  7. Kelly says:

    These look absolutely perfect, Chelsea! I would definitely choose these homemade oatmeal squares over the Nature Valley ones any day. They look so soft and delicious!

  8. Cathleen says:

    I am interested in all copycat recipes! If it means spending less money on processed and packaged food, I am all in!

  9. Katalina says:

    Love the minimum amount of sugar in these squares and the blueberry overload, also the vanilla drizzle is perfection!

  10. Gayle says:

    These are absolutely gorgeous, Chelsea! I love the soft baked nature valley bars, but I have a feeling these are WAY better! What a perfect healthy snack! Pinned!