Baked Oatmeal with Berries

4 from 4 votes
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Baked Oatmeal with Berries is sweet, filling, fruity and soft. It’s gluten-free and dairy-free.

I admit! I love something sweet from the oven in the morning.

But neither do I like gluten-centric delights for breakfast. Nor do I feel like juggling measuring cups or kneading early in the morning.

baked oatmeal with berries

So, this oat casserole is the perfect balance! It is light, fruity, and so easy and convenient that even the kiddos can help out.

You will only use one cup for measuring, combine everything in a bowl, level out in the baking dish, and that’s pretty much it!

The key to the fool-proof texture lies in adding something crunchy on top. And the chopped walnuts in this recipe really live up to the expectations.

This oatmeal is also rich in iron and potassium, and it is a great source of protein and fiber, too. So not only tasty but nutritious, too. A win-win for both your taste buds and overall health!

recipe for Baked Oatmeal with Berries

Ingredients and Substitutes

3 medium bananas – Brown-speckled, super-ripe bananas are a must here. If you have underripe fruit, please either buy ripe bananas or leave them on the counter for a couple of more days before using them.

2 medium eggs – Best if they are at room temperature.

¼ cup maple syrup – You can use an equal amount of corn syrup, agave nectar, or even honey.

1 cup oat milk –You can easily substitute it with almond or rice milk. If you don’t mind dairy, you can even use full-fat milk.

1 tsp vanilla extract

½ tsp salt

5 cups rolled oats – I use rolled oats for a chewy texture. Instant oats will make this bake super soft and kind of more incorporated.

1 cup blueberries – You can substitute with blackberries, too.

1 cup raspberries – You can also use strawberries.

½ cup walnuts – You can also use almonds, pecans, or even hazelnuts here.

ingredients for Baked Oatmeal with Berries

How to Make Baked Oatmeal with Berries

Step 1. Start by preheating your oven to 350 degrees F. Add the bananas to a large bowl and mash with a fork.

Step 2. Add the eggs to the bowl, along with the milk, vanilla extract, maple syrup, and salt.

Step 3. Mix well until the ingredients are combined well.

Step 4. Now, fold in the rolled oats, making sure they are well incorporated into the mixture.

Step 5. Mix in the berries carefully, making sure not to break them.

Step 6. Pour the dough into a previously greased 7×11-inch baking dish. Level it out well, making sure it is even.

Step 7. Add the walnuts on top.

Step 8. Place in the oven and bake for about 25 minutes. Make sure to let it cool down a bit before serving.

step by step instructions to make Baked Oatmeal with Berries

How to Store Baked Oatmeal

The great thing about this dish is that it stores well in the refrigerator. And it can be enjoyed for three to five days, for sure.

Keep in mind that if you store it in the original casserole dish, it will lose moisture much faster.

To prevent this from happening, you can slice it into portions and keep it in an air-tight container.

Or even better, wrap each individual square in plastic wrap. That way, you can even take your baked oatmeal with you and enjoy it on the go.

gluten free Baked Oatmeal with Berries

Watch How to Make It

More Tasty Oatmeal Recipes

Banana Oatmeal Muffins

Oatmeal Cookie Bars

Baked Oatmeal with Chocolate Chips

Baked Oatmeal with Berries
4 from 4 votes

Baked Oatmeal with Berries

By Karo @ AllNutritious
Baked Oatmeal with Berries is perfect for a healthy breakfast. It's fruity, moist, filling and satisfying. The breakfast recipe is gluten-free, and dairy-free.
Prep: 10 minutes
Cook: 25 minutes
Total: 35 minutes
Servings: 10 slices


  • 3 medium bananas mashed
  • 2 medium eggs
  • 1/4 cup maple syrup
  • 1 cup oat milk or almond milk
  • 1 tsp vanilla extract
  • 1/2 tsp salt
  • 5 cups rolled oats
  • 1 cup fresh blueberries
  • 1 cup fresh raspberries
  • 1/2 cup walnuts


  • Preheat the oven to 350F and spray a 7“x 11 “ baking dish with oil.
  • In a large bowl, mash bananas, then crack in the eggs, add maple syrup, oat milk, vanilla extract, and salt. Give it a good mix.
  • Add in rolled oats and combine.
  • Carefully mix in blueberries and raspberries.
  • Pour the dough into a baking dish. Level it out and top it up with walnuts.
  • Bake in the oven for 25 minutes and let it cool down before serving.


Serving: 1 slice | Calories: 282kcal | Carbohydrates: 48g | Protein: 8.1g | Fat: 7.2g | Saturated Fat: 1.1g | Polyunsaturated Fat: 3.7g | Monounsaturated Fat: 1.6g | Cholesterol: 33mg | Sodium: 134mg | Potassium: 362.1mg | Fiber: 6.7g | Sugar: 14g | Calcium: 47mg | Iron: 2.3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe?Leave a comment below with your rating! I love the feedback and respond to every comment!

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4 from 4 votes (2 ratings without comment)

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Recipe Rating


  1. Ju says:

    Has anyone tried with flax egg

    1. Karo @ AllNutritious says:

      Hello Ju,

      I haven’t tried making this baked oatmeal with flax egg but I think there is no reason why it shouldn’t work. Substitute 1:1!

  2. Melody says:

    5 stars
    The best oatmeal

  3. Karo @ AllNutritious says:

    5 stars
    I love it