I love a good overnight breakfast recipe (we’ve made them several different ways), and this overnight baked blueberry muffin oatmeal recipe fits the bill exactly! It’s easy to throw together and then you let it soak overnight in the refrigerator.
This overnight baked blueberry muffin oatmeal is just as good leftover—I just warm up a slice and eat it for days afterward!
Related: 50+ Healthy Breakfast Ideas and Date Shake
I feel like this recipe is one of those meals that doesn’t photograph nearly as well as it tastes! This is probably my favorite overnight oatmeal recipe, and I think the secret is the crumb topping that makes the whole thing feel more like a muffin.
It’s crunchy and sweet and just the perfect addition to the baked oatmeal goodness underneath.
Here is a quick video of how to make this recipe—so simple!
Here is what the overnight baked blueberry muffin oatmeal looks like before letting it soak overnight and then adding the crumb topping. It may look soupy, but all that goodness soaks in and makes for the perfect soft and creamy oatmeal.
You can make this in a classic Pyrex pie pan like I did, or you can also use a pretty pan like this for some extra serving flair (and a set like this is handy for serving cakes and pies).
And do not skip the crumb top! That’s what takes this from just your regular run-of-the-mill baked oatmeal to something truly delicious! It’s like a muffin without a crumb top vs. one with it. We all know which is better. Ha.
I love this all on its own, but it could also be paired with some soft scrambled eggs with one of our hashbrown recipes, or even some bacon if you’re feeling that way.
If you love overnight baked oatmeal as much as I do, then you should also try:
- Overnight Baked Banana Bread Oatmeal
- Pineapple Upside Down Overnight Baked Oatmeal
- Overnight Baked Apple Oatmeal
- Strawberry Shortcake Overnight Baked Oatmeal
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Ingredients
- 1 ¾ cups old-fashioned oats
- ¼ cup sugar
- 1 teaspoon baking powder
- ⅛ teaspoon salt
- 1 ½ cups milk
- 1 egg
- 2 tablespoons butter (melted and cooled)
- 1 teaspoon vanilla extract
- 1 cup blueberries
Crumb Topping
- ¼ cup butter (cold)
- ¼ cup sugar
- ¼ cup all-purpose flour
Instructions
- In a large bowl, stir together the oats, sugar, baking powder, and salt.
- In a smaller bowl, stir together the milk, egg, melted and cooled butter, and vanilla extract.
- Combine the wet ingredient with the dry in the large bowl, stir to combine. Then stir in the blueberries.
- Add this mixture to a pie pan, cover and store overnight in the refrigerator.
- In a small bowl, cut together the crumb topping ingredients. The mixture will be crumbly, like small peas you can press together. Store overnight (or you can make this in the morning, either way).
- Top the oatmeal with the crumb topping, then bake at 350°F for 30-35 minutes. If the crumb topping doesn't look golden brown and slightly crispy, you can set under the broiler for a minute or two.
Nutrition
Notice: Nutrition is auto-calculated, using Spoonacular, for your convenience. Where relevant, we recommend using your own nutrition calculations.
Loved this when I made it! Can’t wait to make it again!
I’ve reviewed this before and it’s worth reviewing again!! I absolutely love this oatmeal. So tasty. I’m going to try subbing the blueberries for fresh cranberries this weekend for a holiday twist!
I’ve made this recipe so many times I that I memorized it. It makes everyone in my house happy.
This made the yummiest breakfast this morning! Subbed in coconut sugar and nut milk and it turned out delish!
So delicious! And I really loved and appreciated episode 240 of your podcast ❤️
The ultimate cozy breakfast! I love this!
My favourite baked oats recipe 🙂
This is so good! I’ve made it many times and it does well with substitutions (honey or maple syrup instead of sugar, other fruit for blueberries, coconut milk for milk, etc) but the crumble topping as-is is a must!
I’ve been making this for years and it’s such a winner! Perfect to impress overnight guests with a yummy breakfast you can prepare ahead of time and not dirty your kitchen the morning of their visit. My in-laws were super impressed and love this. You know it’s a winner when guests ask for thirds!
Love this recipe!
We have made this recipe several times and love the results. I use unsweetened vanilla almond milk. The crumb topping benefits from a 1/4 teaspoon of cinnamon and a pinch of cardamom in my opinion.
This was yummy! My crumble didn’t quite turn out right – it wasn’t as crisp or browned as I thought it should be – but it still was delish! I will definitely be trying again:)
Love this version of baked oatmeal, absolutely delicious!
This is a family favorite! I substituted cranberries instead of blueberries and added 1 tsp cinnamon to the crumble. We love the tart of the cranberries with the sweet crumble on top!
Favorite oatmeal bake! I love that I can prep it the night before. I’ve brought it to a brunch and everyone loved it!
I’ve made this recipe a dozen times. Last time, I froze portions of it to prep for postpartum. Worked so well!
Five stars ! Highly recommend!
I tried a few baked oatmeal recipes and this was the unanimous winner!
This is one of my very favorite breakfast recipes! I make it over and over and love sharing it with guests!
I love this recipe. Whenever I go awhile without making it, I really crave it – totally hits that blueberry muffin craving but with oatmeal! Easy to prep and doesn’t last long in my house.