Easy Blueberry Oatmeal Muffins

By: Casey Updated on Tue, 12 Aug 2025 19:42:53 GMT Breakfast Favorites
Casey, recipe creator at Cooking with Casey
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Updated on Tue, 12 Aug 2025 19:42:53 GMT

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A plate of muffins with blueberries and nuts. Pin it
A plate of muffins with blueberries and nuts.

These easy blueberry oatmeal muffins make busy mornings so much brighter with their tender crumb and bursts of juicy berries. They come together quickly from everyday ingredients yet taste bakery fresh every time. Whether you grab one on your way out the door or linger with a warm cup of coffee, these muffins are a cozy and wholesome start to any day.

My family fell in love with these after the first batch and now we bake them almost weekly especially in blueberry season when we can sneak a couple extra berries into each one

Ingredients

  • All purpose flour: gives the muffins their soft structure look for a brand that is unbleached for best texture
  • Old fashioned oats: bring a chewy wholesome bite make sure they are not instant for ideal texture
  • Baking soda: gives the muffins a gentle rise use fresh baking soda for the perfect dome
  • Brown sugar: adds rich sweetness with a touch of caramel flavor make sure it is soft and moist
  • Unsalted butter: melted for a tender crumb use a good quality butter for best flavor
  • Large eggs: give structure and keep the muffins soft crack them into a separate bowl first to check for freshness
  • Milk: brings moisture and a tender crumb use whole or two percent for best results
  • Fresh or frozen blueberries: the star of the show always select plump blueberries fresh or rattle the bag to check for clumped frozen berries

Step-by-Step Instructions

Preheat and Prepare:
Heat your oven to 400 degrees Fahrenheit and line a twelve cup muffin tin with paper liners this makes cleanup easy and keeps the muffins from sticking
Mix Dry Ingredients:
In a large bowl whisk together your flour oats baking soda and brown sugar until well combined this helps the baking soda and sugar distribute throughout the muffins
Combine Wet Ingredients:
In a separate bowl whisk your melted butter and eggs until the mixture is smooth and thick this ensures even richness throughout the batter
Add Milk to Wet Mixture:
Slowly drizzle in the milk while whisking to prevent curdling and make the mixture smooth and creamy
Bring Wet and Dry Together:
Pour the wet mixture into the bowl with the dry ingredients and stir gently with a spatula mix just until you do not see streaks of flour left to keep muffins tender
Fold in Blueberries:
Add your blueberries and gently turn them into the batter try not to mash the berries for the best bursts of juice in every bite
Fill Muffin Tin:
Evenly divide the batter among the muffin cups filling each about three quarters full
Bake:
Place the tray in the oven and bake for about twelve to fifteen minutes check with a toothpick and if it comes out clean they are ready
Cool:
Let the muffins rest in the pan for five minutes then transfer to a wire rack to cool completely which keeps the bottoms from becoming soggy
A cupcake with blueberries and oatmeal on top.
A cupcake with blueberries and oatmeal on top.

I always look forward to the moment when I fold fresh blueberries into the batter because the scent and color always bring back memories of picking berries on summer mornings with my kids Each batch means a sticky kitchen and lots of giggles but that is half the fun

Storage Tips

Keep leftover muffins in an airtight container at room temperature for two days or refrigerate for up to a week If you want to freeze them place the cooled muffins in a freezer safe bag and thaw overnight on the counter or warm gently in the oven for that just baked taste

Ingredient Substitutions

If you are out of butter you can swap in coconut oil for a dairy free option Use gluten free all purpose flour if needed For plant based muffins substitute with your preferred milk and two flax eggs Fresh blueberries offer the best flavor but frozen can be used straight from the freezer

Serving Suggestions

These muffins are lovely on their own but you can slather them with a bit of softened butter or cream cheese Top with a few extra oats or a sprinkle of turbinado sugar before baking if you like a little crunch They are delicious with coffee tea or a glass of cold milk

A Bite of History

Blueberry muffins have roots in American home baking and oats were a classic addition in early colonial recipes for heartiness Muffins like these have always been a sign of hospitality for guests or a comforting snack as the seasons change

Frequently Asked Questions

How do I keep blueberries from sinking to the bottom?

Toss blueberries with a tablespoon of the flour mixture before folding them into the batter. This helps suspend the fruit evenly.

Can I use frozen blueberries?

Yes, frozen blueberries work well. Add them straight from the freezer and increase baking time by 1-2 minutes if needed.

What can I add for extra flavor?

Lemon zest or a dash of cinnamon adds brightness and warmth to the muffins. Try topping with oats and sugar for crunch.

How do I store muffins for freshness?

Store in an airtight container at room temperature for up to 3 days, or freeze for longer storage. Reheat gently before serving.

Can I use quick oats instead of old-fashioned oats?

Old-fashioned oats provide ideal texture, but quick oats can be substituted if needed. The muffins may be slightly softer.

4.70 from 84 votes

Easy Blueberry Oatmeal Muffins

Prep Time:
10 Minutes
Cook Time:
15 Minutes
Total Time:
25 Minutes
Servings:
12
A plate of muffins with blueberries and nuts.

Wholesome muffins packed with blueberries and oats. Soft, moist, and perfect for a quick morning treat.

Ingredients

  • Dry Ingredients

  • 250 grams all-purpose flour
  • 45 grams old-fashioned rolled oats
  • 1.5 teaspoons baking soda
  • 100 grams packed brown sugar
  • Wet Ingredients

  • 115 grams unsalted butter, melted
  • 2 large eggs
  • 240 millilitres milk
  • Fruit

  • 225 grams fresh or frozen blueberries

Instructions

1.

1. Prepare Oven and Pan: Preheat oven to 200°C. Line a 12-cup muffin tin with paper liners.

2.

2. Mix Dry Ingredients: In a large bowl, whisk together the all-purpose flour, oats, baking soda, and brown sugar until evenly combined.

3.

3. Blend Wet Ingredients: In a medium bowl, whisk the melted butter and eggs until fully incorporated. Gradually whisk in the milk until smooth.

4.

4. Combine Mixtures: Pour the wet ingredients into the dry ingredients. Stir gently with a spatula until just combined, avoiding overmixing.

5.

5. Fold in Blueberries: Carefully fold the blueberries into the batter, distributing them evenly.

6.

6. Fill Muffin Cups: Spoon the batter evenly into the prepared muffin cups, filling each about three-quarters full.

7.

7. Bake Muffins: Bake for 12–15 minutes, or until a toothpick inserted into the centre of a muffin comes out clean.

8.

8. Cool and Serve: Allow muffins to cool in the pan for 5 minutes. Transfer to a wire rack to cool completely before serving.

Notes

  1. For optimal muffin texture, mix the batter only until the flour disappears to prevent toughness.
  2. Toss blueberries with a tablespoon of the flour mixture before folding them in to help prevent sinking.
  3. Enhance flavour by adding 1 teaspoon of lemon zest or create a crunchy topping using oats and a sprinkle of sugar before baking.

Tools You'll Need

  • 12-cup muffin tin
  • Large mixing bowl
  • Medium mixing bowl
  • Whisk
  • Spatula
  • Wire rack

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains eggs
  • Contains milk
  • Contains wheat (gluten)
  • Contains dairy (butter, milk)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 220
  • Total Fat: 9 g
  • Total Carbohydrate: 29 g
  • Protein: 4 g