Overnight Blueberry Baked Oatmeal is a delightful morning dish that combines the heartiness of oats with the sweet burst of blueberries. The idea of preparing oatmeal the night before is a game-changer, letting you wake up to a warm, yummy breakfast with minimal effort. I stumbled upon this recipe during a busy week when mornings were too hectic, and I needed a way to make breakfast easy yet satisfying. The combination of creamy Greek yogurt and maple syrup gives this baked oatmeal a distinct flavor that sets it apart from traditional oatmeal.
Why You’ll Love This Dish
This recipe isn’t just about convenience; it’s a treasure for anyone looking for a healthy, quick breakfast option. It’s budget-friendly, packed with nutrition, and wonderfully kid-approved, making it ideal for family brunches or weekday meal prep. The prep is a breeze; you simply mix, chill, and bake. The result? A warm, bubbly dish that will bring everyone to the kitchen table, especially on busy school days.
“I love how I can prepare it the night before! By morning, it’s a delicious, simple breakfast that feels indulgent without the fuss!”
Preparing Overnight Blueberry Baked Oatmeal
This recipe flows together beautifully in a few steps. First, you’ll combine your base ingredients to create a creamy oatmeal mixture. After folding in the blueberries, you’ll top it with a crumbly streusel mixture for added texture and sweetness. The setup takes no more than 15 minutes, and after a night in the fridge, all you need to do is pop it in the oven.
What You’ll Need
To create this scrumptious breakfast, gather these items:
- 2 cups rolled oats
- 1 cup milk (or milk alternative)
- 1/2 cup Greek yogurt
- 1/4 cup maple syrup or honey
- 2 teaspoons baking powder
- 1 teaspoon cinnamon
- 1/2 teaspoon salt
- 2 cups blueberries (fresh or frozen)
- 1/4 cup chopped nuts (optional)
- 1/4 cup brown sugar (for streusel topping)
- 2 tablespoons butter (for streusel topping)
- 1/4 cup flour (for streusel topping)
Feel free to swap the milk for your favorite dairy-free option, like almond or oat milk. Fresh or frozen blueberries work beautifully, so don’t hesitate to use what you have on hand.

Directions to Follow
Here’s how to prepare your Overnight Blueberry Baked Oatmeal:
- In a large bowl, combine rolled oats, milk, Greek yogurt, maple syrup, baking powder, cinnamon, and salt.
- Gently fold in the blueberries until evenly mixed.
- Pour the mixture into a greased baking dish, spreading evenly.
- In another bowl, combine brown sugar, butter, and flour until the mixture is crumbly. Sprinkle this streusel topping over the oat mixture.
- Cover the baking dish and refrigerate overnight.
- In the morning, preheat the oven to 375°F (190°C) and bake for 25-30 minutes, or until the top is golden and the mixture is set.
- Let cool slightly before serving.
Best Ways to Enjoy It
Serve this baked oatmeal warm, drizzling a bit of extra maple syrup or honey on top for those who like it sweeter. Consider pairing it with a dollop of Greek yogurt or a sprinkle of nuts for added creaminess and crunch. A glass of cold milk or a cup of your favorite coffee will round out this breakfast beautifully.
How to Store and Reheat
Leftover Overnight Blueberry Baked Oatmeal can be stored in an airtight container in the fridge for up to four days. Simply reheat a serving in the microwave for about a minute, or you can pop it back in the oven until warmed through. This makes it perfect for meal prep or surprise brunch guests!
Tips for Success
- Make sure to grease your baking dish well to prevent sticking.
- Use a hand mixer to make the streusel topping even fluffier.
- For a fun twist, add a teaspoon of vanilla extract to the oatmeal mixture for a flavor boost.
Recipe Variations
Feel free to get creative with this dish! Substitute the blueberries with raspberries or mixed berries for a different taste. You could also try adding a mashed banana or some chopped apples for extra fruitiness. If you’re after a nut-free version, simply skip the nuts or replace them with seeds like pumpkin or sunflower.
Frequently Asked Questions
How long does this take to prepare?
Preparation takes about 15 minutes, then it bakes for 25-30 minutes in the morning.
Can I use quick oats instead of rolled oats?
While it’s best to use rolled oats for texture, quick oats can work in a pinch, though the consistency may be softer.
Is it safe to store leftovers?
Yes! Store in an airtight container in the fridge for up to four days.
Can I freeze this baked oatmeal?
Absolutely! Slice it into portions before freezing. It can be reheated directly from the freezer.

Recommended Kitchen Tools
Nonstick Muffin Pan
This pan ensures your baked goods and dishes come out effortlessly, making clean-up a breeze. Perfect for creating individual portions!
Mixing Bowls Set
A set of quality mixing bowls is essential for any recipe. These bowls are perfect for whisking, mixing, and even serving!
Bamboo Cutting Board Set
Durable and practical, this cutting board set is a must-have for prepping ingredients without dulling your knives.
PrintOvernight Blueberry Baked Oatmeal
A delightful morning dish combining hearty oats and sweet blueberries, prepared the night before for a warm breakfast with minimal effort.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 6 servings
- Category: Breakfast
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 2 cups rolled oats
- 1 cup milk (or milk alternative)
- 1/2 cup Greek yogurt
- 1/4 cup maple syrup or honey
- 2 teaspoons baking powder
- 1 teaspoon cinnamon
- 1/2 teaspoon salt
- 2 cups blueberries (fresh or frozen)
- 1/4 cup chopped nuts (optional)
- 1/4 cup brown sugar (for streusel topping)
- 2 tablespoons butter (for streusel topping)
- 1/4 cup flour (for streusel topping)
Instructions
- In a large bowl, combine rolled oats, milk, Greek yogurt, maple syrup, baking powder, cinnamon, and salt.
- Gently fold in the blueberries until evenly mixed.
- Pour the mixture into a greased baking dish, spreading evenly.
- In another bowl, combine brown sugar, butter, and flour until the mixture is crumbly. Sprinkle this streusel topping over the oat mixture.
- Cover the baking dish and refrigerate overnight.
- In the morning, preheat the oven to 375°F (190°C) and bake for 25-30 minutes, or until the top is golden and the mixture is set.
- Let cool slightly before serving.
Notes
Serve warm with extra maple syrup or honey, and consider adding yogurt or nuts on top for extra texture.

