Blueberry Baked Oatmeal is an easy and healthy breakfast you can prep the night before and bake in the morning. Perfect for a stress-free weekday breakfast!
We love baked oatmeal around here.
I have a few versions here on the blog that are super delicious already, but a blueberry one was definitely missing!
This works great with both fresh or frozen blueberries, so it’s a wonderful make ahead breakfast all year round.
You can even switch up the berries if you’re feeling adventurous – raspberry is a firm favorite over here, too!
Blueberry Oatmeal Bake
What ingredients do you need to make blueberry baked oatmeal?
The ingredients for baked oatmeal are super simple – oats, milk, unsweetened applesauce, eggs, a little oil, walnuts, some sweetener and a few spices.
And blueberries, of course! You can use fresh or frozen.
I usually don’t stir them in but sprinkle them on top, to keep the oatmeal from turning all weirdly grey.
How do you make this baked oatmeal and blueberries budget friendly?
I mean, oats already ARE quite cheap.
But show of hands, fellow moms – who’s always looking for ways to lower their grocery budget? 🙋🏻♀️
When there’s a few kids who seem to be hungry all day long, the money I spend on food just starts adding up. So I use a few tricks here to make this a super cheap breakfast:
- Buy in bulk: Oats and nuts are easy to buy in bulk. Store the nuts in the freezer and they won’t go rancid!
- Use frozen blueberries: Frozen berries are usually cheaper than fresh ones. Frozen works just fine for this oatmeal! Sometimes I buy up lots of fresh berries when they’re on sale, wash them, dry them and freeze them myself!
- Be mindful of measurements: Sure, we can all eyeball. Sometimes better, sometimes worse (looking at you, peanut butter!). But for expensive ingredients (uhm, maple syrup? you mean the bottle my toddler just emptied over her pancakes this morning as I was still flipping mine? yep), be sure to use the exact measurements given in the recipe. Otherwise you’ll be wasting money!
How to Make Blueberry Baked Oatmeal:
It’s as easy as:
- mix everything except for the berries
- layer in a baking dish with the berries
- chill overnight
And what… If you didn’t remember to assemble it the night before??
Easy: Make sure to use quick-cooking oats, let the assembled oats sit on the counter for 10 minutes while you preheat the oven, and live with the fact that it’s a little less cake-like 😉
Check out the step by step photos below:
1. Mix all ingredients together (except for the blueberries).
I just use a large bowl, measure out all my ingredients, dump them in the bowl and stir with a wooden spoon until they’re combined.
Well, that’s pretty much the recipe 😉
2. Transfer to a baking dish.
I’m using a 7×11 rectangular baking dish. You could also do individual muffin cups!
I prefer layering my baked oatmeal vs stirring the blueberries into the whole mix.
This a) helps prevent blueberries sticking to the bottom of the baking dish like glue and b) doesn’t turn your baked oatmeal a ghastly grey color.
First, I spread half the oat mix in the bottom of the baking dish. It’s smart to just lightly grease the dish, but I often forget. Then I layer on most of the blueberries.
THEN I add the rest of the oat mixture…
… and scatter with a few remaining blueberries and some extra chopped walnuts for pretty looks.
This is not necessary, but it does look nice.
3. Chill the oatmeal.
Finally, cover it up (a towel is fine if you don’t use plastic wrap!) and chill it in the fridge overnight.
If it looked a little lose when you put it together… After a night in the fridge the oats will have soaked up the liquid and everything will look a little bulkier.
4. Bake the oatmeal.
Then you just pop it in the oven and pat yourself on the back for being so organized 😉
How to serve this blueberry oatmeal breakfast bake:
Some of my family members prefer theirs in a bowl with milk and use a spoon to eat their oatmeal.
Others like it cake-style, with a few spoonfuls of Greek yogurt and a fork.
And one particular tiny person might like it best cold, slathered with peanut butter 😉
I let them do whatever they want, as long as they get their own stuff and put it back again after breakfast, ha!
More baked oatmeal recipes you’ll love:
Blueberry Baked Oatmeal
- 2 cups old fashioned oats
- 3/4 cup milk
- 1 cup unsweetened applesauce
- 1/4 cup chopped walnuts
- 2 large eggs see notes for substitute
- 1/4 cup maple syrup OR brown sugar
- 2 teaspoons pure vanilla extract
- 1 1/2 teaspoons cinnamon
- ½ teaspoon baking powder
- 1/4 teaspoon salt
- 2 cups blueberries fresh and frozen both work
- Mix the ingredients: Add the oats, milk, applesauce, walnuts, eggs, maple syrup, vanilla, cinnamon, baking powder and salt to a large bowl. Mix well.
- Layer in a casserole dish: Lightly grease a 7×11 inch rectangular baking dish. Spread half the oat mixture in the bottom of the dish. Sprinkle with about 3/4 of the blueberries. Top with the remaining oat mixture, carefully smoothing the top. Sprinkle on the remaining blueberries. You can also sprinkle on some extra walnuts if you like!
- Chill the dish: Cover the casserole dish and chill in the fridge overnight.
- Bake the dish: The next morning, remove the dish from the fridge. Preheat the oven to 350°F. Bake until set and golden on top, about 30-35 minutes. Rest for 5 minutes on a rack on the counter, then slice and serve warm.