Blueberry Oatmeal Muffin Recipe (Hearty & Moist!)

By Natalie Quinn

On October 19, 2025

A stack of three homemade blueberry oatmeal muffins on a plate, with one split open to show the moist interior.

Cuisine

American

Prep time

10 minutes

Cooking time

20 minutes

Total time

30 minutes

Servings

12 muffins

Get ready to transform your mornings with the ultimate blueberry oatmeal muffin recipe. These aren’t just any muffins; they are hearty, incredibly moist, and bursting with juicy blueberries in every single bite. Made with simple, wholesome ingredients like rolled oats and brown sugar, this recipe yields perfectly tender muffins that are equally amazing for a quick breakfast or a satisfying afternoon snack. Say goodbye to dry, boring muffins forever!

We’ve tested this recipe time and time again to ensure it’s foolproof. The combination of oats and flour creates a wonderfully soft yet substantial texture that will keep you full and happy. They are simple to whip up, making them perfect for busy weekday mornings or a lazy weekend brunch.

Why This is the Best Blueberry Oatmeal Muffin Recipe

There are countless muffin recipes out there, but this one truly stands out. Here’s why you’ll fall in love with it:

  • Incredibly Moist Texture: The oats soak up the liquid, and the brown sugar adds a deep molasses flavor, ensuring these muffins stay tender and moist for days.
  • Hearty & Satisfying: Rolled oats give these muffins a fantastic, chewy texture and make them much more filling than standard all-flour muffins.
  • Bursting with Flavor: We use a generous amount of blueberries, so you’re guaranteed to get that sweet, tangy pop of fruit in every bite. A hint of cinnamon adds a lovely warmth.
  • Simple & Foolproof: This is a straightforward recipe with easy-to-follow steps. You don’t need any fancy equipment, just a couple of bowls and a muffin tin.

Key Ingredients You’ll Need

This recipe relies on simple pantry staples to create something truly special. Here’s what you’ll need to gather:

Overhead view of ingredients for blueberry oatmeal muffins, including flour, oats, blueberries, milk, and eggs.
Simple, wholesome ingredients are all you need for this delicious muffin recipe.

Dry Ingredients

  • All-Purpose Flour: Provides the main structure for the muffins.
  • Old-Fashioned Rolled Oats: Adds a wonderful hearty texture and chew. Do not use steel-cut oats. Quick-cooking oats can work in a pinch but rolled oats are preferred.
  • Brown Sugar: Sweetens the muffins and adds moisture for a softer crumb. Light or dark brown sugar works well.
  • Baking Powder & Baking Soda: These leavening agents work together to give the muffins a beautiful rise and a light, fluffy texture.
  • Cinnamon & Salt: Cinnamon adds a subtle warmth that complements the blueberries, while salt enhances all the flavors.

Wet Ingredients

  • Milk: Provides the necessary moisture. Whole milk is great for richness, but any milk (including buttermilk or almond milk) will work.
  • Melted Butter: Adds richness and flavor. You can substitute with a neutral oil like canola or melted coconut oil.
  • Egg: Binds the ingredients together and adds to the structure.
  • Vanilla Extract: A splash of vanilla enhances the sweet flavors.

The Blueberries

  • Blueberries: The star of the show! You can use fresh or frozen blueberries for this recipe. See my tips below for using frozen berries.

How to Make Blueberry Oatmeal Muffins (Step-by-Step)

Making these muffins is as easy as mix, fold, and bake! Follow these simple steps for perfect results.

  1. Prep Your Station: Preheat your oven to 400°F (200°C). Line a 12-cup standard muffin tin with paper liners or grease it well.
  2. Combine Dry Ingredients: In a large bowl, whisk together the all-purpose flour, rolled oats, brown sugar, baking powder, baking soda, cinnamon, and salt.
  3. Combine Wet Ingredients: In a separate medium bowl, whisk together the milk, melted butter, egg, and vanilla extract until just combined.
  4. Mix Wet and Dry: Pour the wet ingredients into the dry ingredients. Stir with a spatula until just combined. Be careful not to overmix! A few lumps are perfectly fine.
  5. Fold in Blueberries: Gently fold in the blueberries. If using frozen, add them directly from the freezer without thawing.
  6. Fill Muffin Tin: Divide the batter evenly among the 12 prepared muffin cups. They should be about three-quarters full. For a bakery-style look, you can sprinkle a little coarse sugar or a few extra oats on top.
  7. Bake to Perfection: Bake for 18-22 minutes, or until a wooden skewer inserted into the center of a muffin comes out clean.
  8. Cool: Let the muffins cool in the tin for 5 minutes before transferring them to a wire rack to cool completely. Enjoy warm or at room temperature.

Expert Tips for Perfect Muffins Every Time

Unlock the secrets to flawless muffins with these professional tips.

Don’t Overmix the Batter

This is the golden rule of muffin making! Overmixing develops the gluten in the flour, which results in tough, dense muffins instead of light and tender ones. Mix only until the flour streaks disappear.

Using Fresh vs. Frozen Blueberries

Both fresh and frozen blueberries work wonderfully in this recipe. If you use frozen blueberries, do not thaw them first. To prevent them from turning your batter purple, toss them with a tablespoon of the dry flour mixture before gently folding them in at the very end.

Rolled Oats vs. Quick Oats: What’s the Best Choice?

For the best texture, I recommend old-fashioned rolled oats. They provide a distinct, hearty chew that holds up well during baking. Quick-cooking oats can be used, but they will absorb more moisture and result in a softer, more cake-like muffin.

The Secret to a Domed Top

The initial high heat of 400°F helps the muffins rise quickly, creating those beautiful domed tops we all love. Filling the muffin cups nearly to the top also helps achieve this bakery-style look.

Variations & Substitutions

This recipe is incredibly versatile. Here are a few popular ways to customize it to your liking or dietary needs.

An overhead shot of freshly baked blueberry oatmeal muffins cooling on a wire rack.
Nothing beats the smell and taste of warm blueberry oatmeal muffins.
Variation Instructions
Streusel Topping Mix 1/4 cup flour, 1/4 cup brown sugar, 2 tbsp cold butter, and 1/2 tsp cinnamon until crumbly. Sprinkle over muffins before baking. Check out our favorite blueberry streusel muffin recipe for more ideas.
Healthier Swaps Replace half the all-purpose flour with whole wheat flour. Substitute melted butter with applesauce or Greek yogurt for a lower-fat option. Our healthy blueberry muffin recipe has great tips.
Gluten-Free Use a high-quality 1-to-1 gluten-free all-purpose flour blend in place of the regular flour, and ensure your oats are certified gluten-free.
Add Nuts or Spices Fold in 1/2 cup of chopped walnuts or pecans for a nutty crunch. Add a pinch of nutmeg or cardamom along with the cinnamon for extra warmth.

How to Store and Freeze

One of the best things about these muffins is that they are perfect for making ahead.

  • To Store: Let the muffins cool completely. Store them in an airtight container at room temperature for up to 4 days. To prevent them from getting soggy, you can place a paper towel in the bottom of the container.
  • To Freeze: Once completely cooled, wrap each muffin individually in plastic wrap, then place them in a freezer-safe zip-top bag. They will keep well in the freezer for up to 3 months. To reheat, simply microwave for 30-45 seconds or let them thaw at room temperature.

My Favorite Blueberry Oatmeal Muffin Recipe

A stack of three homemade blueberry oatmeal muffins on a plate, with one split open to show the moist interior.

Blueberry Oatmeal Muffin Recipe (Hearty & Moist!)

This easy blueberry oatmeal muffin recipe creates incredibly moist, hearty, and flavorful muffins. Made with rolled oats and bursting with juicy blueberries, it's the perfect wholesome breakfast or snack.
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 12 muffins
Course: Breakfast, Snack
Cuisine: American
Calories: 245

Ingredients
  

For the Muffins
  • 1.5 cups all-purpose flour
  • 1 cup old-fashioned rolled oats not steel-cut
  • 0.75 cup packed brown sugar
  • 2 tsp baking powder
  • 0.5 tsp baking soda
  • 0.5 tsp ground cinnamon
  • 0.5 tsp salt
  • 1 cup milk whole milk or buttermilk preferred
  • 0.5 cup unsalted butter melted and slightly cooled
  • 1 large egg room temperature
  • 1 tsp vanilla extract
  • 1.5 cups blueberries fresh or frozen

Equipment

  • 1 12-cup muffin tin
  • 2 Mixing Bowls
  • 1 Whisk and Spatula

Instructions
 

  1. Preheat your oven to 400°F (200°C). Line a 12-cup standard muffin tin with paper liners or grease it well.
  2. In a large bowl, whisk together the all-purpose flour, rolled oats, brown sugar, baking powder, baking soda, cinnamon, and salt.
  3. In a separate medium bowl, whisk together the milk, melted butter, egg, and vanilla extract until just combined.
  4. Pour the wet ingredients into the dry ingredients. Stir with a spatula until just combined. Do not overmix; a few lumps are okay.
  5. Gently fold in the blueberries. If using frozen, add them directly from the freezer and toss with 1 tbsp of the flour mixture beforehand to prevent bleeding.
  6. Divide the batter evenly among the 12 prepared muffin cups, filling them about three-quarters full. Optional: sprinkle with coarse sugar.
  7. Bake for 18-22 minutes, or until a wooden skewer inserted into the center of a muffin comes out clean.
  8. Let the muffins cool in the tin for 5 minutes before transferring them to a wire rack to cool completely.

Notes

For Bakery-Style Tops: Fill the muffin cups almost to the top and sprinkle with coarse sugar before baking.
Using Frozen Blueberries: Do not thaw them. Tossing them in a tablespoon of the flour mixture helps prevent them from sinking and turning the batter purple.
Storage: Store in an airtight container at room temperature for up to 4 days.

Frequently Asked Questions

Yes, you can. To make this recipe gluten-free, substitute the all-purpose flour with a good quality 1-to-1 gluten-free baking flour blend. Also, ensure that your rolled oats are certified gluten-free to avoid any cross-contamination.

Absolutely! For best results, do not thaw the frozen blueberries before using them. To prevent the batter from turning purple, gently toss the frozen berries with one tablespoon of the flour mixture from the recipe before folding them into the batter at the very end.

The key to moist muffins is not overmixing the batter. Stir only until the wet and dry ingredients are just combined—a few lumps are fine! Using ingredients like brown sugar and full-fat milk or buttermilk also adds significant moisture.

Store the completely cooled muffins in an airtight container at room temperature for up to 4 days. Placing a paper towel in the container can help absorb any excess moisture and keep them fresh.

Old-fashioned rolled oats are the best choice for this recipe. They provide a wonderful, hearty texture and a pleasant chew. Quick-cooking oats can be used in a pinch, but they will result in a softer, more cake-like muffin as they absorb more liquid.

More Muffin Recipes to Try

If you loved this recipe, you’re sure to enjoy some of our other favorites! For a classic treat, try our easy blueberry muffin recipe. If you’re looking for something with a bit more tang, our blueberry yogurt muffins are a must-try. And for a decadent, bakery-quality experience, don’t miss our ultimate bakery-style blueberry muffins.

Share Your Creations!

I hope you love this blueberry oatmeal muffin recipe as much as my family does! They are a truly wonderful way to start the day. If you make them, please leave a comment below and let me know how they turned out. And don’t forget to save this recipe to your breakfast board on Pinterest!

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