One Pan Baked Oatmeal is the perfect easy and delicious meal prep recipe. Made entirely in one pan with just a few simple ingredients, this is a new go-to breakfast for my family. Gluten-free, dairy free, and refined sugar free, too!
Awhile back I shared this easy, One Pan Baked Oatmeal on instagram and so many of you have made it since! This recipe was trending on TikTok several months ago, and once I tried it, I was hooked. I tweaked it a bit to make the containers work for the 21 Day Fix and the 4 Week Gut Protocol, and it’s so good, we even made it for Easter Brunch. This is a great recipe for no fuss meal prep and an easy, healthy breakfast idea for the whole family.
Why You Will Love this Recipe:
This is going to be your new favorite healthy breakfast recipe because:
- It’s a fast and easy way to eat a delicious breakfast on busy mornings – you can mix this up and pop it in the oven in minutes. Since it’s made in only one pan, there’s less mess to clean up!
- It’s made with just eight simple ingredients that you likely already have on hand.
- It is gluten free, dairy free, and sweetened with fruit, so perfect for anyone with dietary restrictions.
- It’s a great for using up those overripe bananas that are sitting on your counter.
- It’s an awesome blend of fiber, whole grains, antioxidants, and protein to fill you up until lunch.
Ingredients to Make One Pan Oatmeal
To make this easy recipe, you just need to gather the simple ingredients listed below:
- Ripe bananas: the riper the better
- Rolled oats: we use gluten free oats, but any rolled or old fashioned oats will work for this. I wouldn’t use quick cooking oats or steel cut oats, as the texture will likely be off.
- Seeds: chia seeds, flax seeds, or hemp seeds all work. Or, even better, do a combination of all three!
- Unsweetened almond milk: we use almond milk because that’s what we have in the fridge, but feel free to use any milk that you have on hand.
- Frozen mixed berries or fresh berries: one of the reasons I LOVE this recipe is being able to toss on a bunch of frozen berries without the hassle of soaking and drying fresh berries. But you can certainly use fresh berries or whatever fresh fruit you want!
- Cinnamon and vanilla extract: these simple pantry staple ingredients just elevate this baked oatmeal, so don’t skip them.
- Maple syrup + Nut Butter for Serving: I love adding a tsp of each to my bowl before enjoying.
How to Make One Pan Baked Oatmeal
Step One: Preheat the oven to 350°F. Add nonstick spray to a baking dish or casserole dish – I like using avocado or coconut oil spray. The perfect size is an 8X11 dish.
Step Two: Mash the ripe bananas using a fork and add them to the baking dish. Next add in the dry ingredients to the mashed bananas- oats, cinnamon, and seeds. Pour the milk and the vanilla extract over the oats. Use the fork and stir. Once mixed, add the frozen berries on top of the banana oat mixture.
Step Three: Put the baking dish in the oven and bake until there is no liquid left and the oatmeal looks set. This will take about 25 minutes.
Step Four: Remove from the oven and add your favorite toppings. For extra sweetness, drizzle with pure maple syrup and, my favorite way, drizzle with some peanut butter.
Substitutions or Additions
You can truly make this recipe your own by swapping ingredients and toppings based on what you like or what you have on hand. Have fun and customize the toppings to make this recipe work for your whole family.
- Swap berries for diced apples, fresh or frozen peaches, frozen cherries or whatever your heart desires.
- Sprinkle on some chocolate chips, chopped nuts, brown sugar, or shredded coconut for extra topping fun.
- Add lemon or orange zest to add a little tart flavor to the sweet berries.
- Can’t have bananas? Try this same recipe with store bought or homemade unsweetened applesauce or a cup of pumpkin puree. Or try this Blueberry Baked Oatmeal from Fit Mitten Kitchen that is made without any bananas!
- Can’t have nuts? Replace the almond milk with whatever dairy or non-dairy milk you have on hand. Coconut milk beverage would also work, but I wouldn’t use the canned coconut milk.
FAQs
What can you add to oatmeal to add a few extra grams of protein?
There are a handful of healthy ingredients that you can add for some extra protein. Serving with plain Greek yogurt or ricotta can be a great addition to boost the amount of protein in this breakfast. You can also add hemp seeds or protein powder into the mixture as well. You could try adding egg whites – if you do, let us know how this goes.
How do you store leftover baked oatmeal?
I love making a big batch of this oatmeal and just covering the pan with plastic wrap or portioning it into individual servings and storing in an airtight container in the refrigerator for 4-5 days.
Can you freeze baked oatmeal?
Yes! Just allow the baking dish to come to room temperature, then cut your baked oats into six servings. Place each serving onto a sheet pan lined with parchment paper. Once they are frozen, store in a ziplock bag or airtight container. To thaw, place in the refrigerator overnight or thaw in the microwave and enjoy warm.
More Easy Oat Recipes:
Healthy Banana Oatmeal Blender Muffins
Instant Pot Steel Cut Oats
Baked Oatmeal Jars
One Pan Baked Oatmeal
Ingredients
- Coconut or avocado oil cooking spray optional
- 2 ripe bananas
- 2 cups rolled oats
- 2 tablespoons chia seeds flax seeds, or hemp seeds
- 2 cups almond milk
- 2 cups frozen mixed berries or fresh berries
- ½ teaspoon cinnamon
- 1 teaspoon vanilla extract
- Maple syrup + Nut Butter for Serving optional
Instructions
- Preheat oven to 350°F. Lightly coat an 8×11 baking dish with nonstick cooking spray (optional, but helpful in case your oats stick)
- Mash the ripe bananas using a fork and add them to the baking dish. Next add in the dry ingredients to the mashed bananas- oats, cinnamon, and seeds. Pour the milk and the vanilla extract over the oats. Use the fork and stir. Once mixed, add the frozen berries on top of the banana oat mixture.
- Bake in the preheated oven until the liquid is absorbed and the oatmeal is set, about 25 minutes.
- Drizzle maple syrup and or nut butter on top before serving.
Rahel Moore says
I love the look of this. We can’t have nuts in our house, if I use a different milk like coconut or oats, what would the container count be for 4 week gut protocol?
Nancylynn says
Hi Rahel! I just looked into this – since unsweetened almond milk and unsweetened coconut milk beverage are both 1 tsp per 8 fl oz., you can sub that and keep the container counts the same for Gut Protocol. Alternatively, you can use 2 c. Unsweetened oat milk or unsweetened rice milk and the container counts would be 1 YELLOW A, 1/3 YELLOW B, and 1 PURPLE. Hope this helps!
Haley Finney says
What is the serving size for this for 21 day fix?
Nancylynn says
1 YELLOW, 1 PURPLE, 1/3 TSP per serving, and I just divide the pan evenly into 6 portions to measure it!
Katelyn says
Such a great recipe as is with all your recipes!
Nancylynn says
So thrilled to hear it, Katelyn!
Violet says
My 9 month old daughter loves this recipe! I love that I can get it ready while she plays with her toys and it is ready to eat by the time she’s ready to eat breakfast.
Nancylynn says
I love this too!! Sounds like a win for everyone!
Jane A. says
I absolutely love this recipe! I look forward to my next morning to eat my healthy breakfast! I love all your recipes! Well most all of ’em! 😉 Thank you so much for all you meal planning, all your hard work, all your recipes, all the information that you put together to make our lives much easier! You’re amazing Nancylynn and such a blessing to us all! Thank you thank you thank you! 💞🙏
Nancylynn says
Jane, this is the sweetest! Thank you!!
Kora says
This is an amazing, easy recipe! I always look forward to my next slice. Thank you!
Nancylynn says
Aww thats so nice to hear! Thank you for taking the time to comment, Kora!!
Carrie says
I am totally addicted to this! I’ve eaten it every day for 12 days (2 full pans worth!), and now I’m awake at 4:30am wanting to go to the kitchen to make a 3rd pan since I ate the last piece yesterday. I LOVE how when paired with a side of scrambled eggs, it keeps me full until lunch!
Nancylynn says
I am so happy, Carrie!!! I love that you were awake at 4:30am and thinking about this 😂. You are the best!
Anastasia says
My daughter is allergic to bananas. Is there something I could use instead to make this?
Nancylynn says
You could give unsweetened applesauce a shot in place of the bananas, but I haven’t tested it before. Let us know how it goes if you try it!
If you want a banana-less baked oatmeal recipe you could try one of these too: https://confessionsofafitfoodie.com/instant-pot-oatmeal-21-day-fix/ or https://confessionsofafitfoodie.com/21-day-fix-baked-oatmeal/
Amy says
Love all your recipes and appreciate all the meal plans you put together. This has been a favorite since you shared it. I wanted to switch it up since I’ve enjoyed it multiple weeks in a row. I was wondering if I used chopped apples instead of frozen berries if you thought that could work? Do you think I would need a little more liquid?
Thanks!