The best Chunky Monkey Baked Oatmeal made with simple ingredients like old-fashioned oats, bananas, and maple syrup for a little sweetness. If you love chunky monkey ice cream then you’re going to love this baked oatmeal for a delicious and hearty breakfast or snack!

Why You’ll Love This Chunky Monkey Banana Baked Oatmeal

It’s nourishing – Made with gluten-free oats, eggs, banana, chopped walnuts this recipe is full of all the good things to start your day.
Quick and easy – There are no complicated steps or hours of waiting required for this recipe. Just combine the ingredients, pop the oatmeal in the oven, and breakfast is ready in under an hour!
Simple ingredients – This chunky monkey baked oatmeal together with just a handful of ingredients. Plus, it’s easy to customize so that you can use whatever you may have on hand at the time!

Recipe Ingredients

Eggs: these help hold the baked oatmeal together.

Bananas: be sure to choose bananas that are tender and ripe. This recipe is a great way to use up those spotty brown bananas you have sitting on the counter.

Almond Milk: unsweetened almond milk is my go-to, but really any milk will work!

Maple Syrup: this gives the oatmeal the perfect amount of sweetness.

Melted Butter: I like to include a little melted butter in this oatmeal for a richer flavor.

Vanilla Extract: a must-have in any good baked oatmeal recipe!

Old Fashioned Oats: if you have a gluten allergy look for certified gluten-free oats.

Ground Cinnamon: not only do cinnamon and oats go well together, but the flavor of cinnamon and bananas also pairs nicely. The cinnamon adds a delicious warm flavor to the oatmeal that gives it that banana bread vibe.

Mix-Ins: chopped walnuts, unsweetened shredded coconut, and chocolate chips all give the baked oatmeal that “chunky monkey” flavor and texture. Use mini or regular-sized chocolate chips, and choose any kind you like best. Personally, I love dark chocolate, but milk chocolate or semi-sweet chocolate chips will also work.

baked oatmeal batter with chocolate chips, nuts, and coconut

Ingredient Substitutions

Almond milk – you can use any milk you have on hand such as coconut milk, oat milk, cashew milk, or whole milk for this chunky monkey baked oatmeal.
Dairy-free – if you need to keep your oatmeal completely dairy-free, use dairy-free butter or coconut oil and dairy-free chocolate chips.
Walnuts – add to or replace the walnuts with a handful of chopped pecans, pumpkin seeds, or sliced almonds for a little crunch.
Use extra spices – if you want to increase the spices in this recipe go for it! If you’d like to, feel free to add in a bit of extra cinnamon or nutmeg.
Add fruit – you can skip the chocolate chips altogether and replace them with fruit or just add in some extra fruit along with the chocolate. Your favorite fresh fruit like blueberries, raspberries, or even blackberries will all work well!

How to Make Chunky Monkey Baked Oatmeal

Step One: Preheat the oven to 350 degrees.

Step Two: To a large mixing bowl, add the eggs, almond milk, mashed banana, maple syrup, melted butter, and vanilla extract. Whisk all the wet ingredients together until well combined.

Step Three: Next, add the oats, ground cinnamon, baking powder, and salt to the mixing bowl, and stir until well combined.

Step Four: Fold the walnuts, shredded coconut, and chocolate chips into the batter until well incorporated.

Step Five: Transfer the oatmeal batter to a greased 9×9 inch baking dish, and sprinkle extra chopped walnuts and chocolate chips on top.

Step Six: Bake for 35-50 minutes or until the oatmeal is just set.

Make Ahead Options

This recipe is great to prep in advance! You have two options:

Option One: Add all the dry ingredients to a mixing bowl, cover, and let sit on the counter. Next, whisk together all of the wet ingredients in a mixing bowl until well combined. Cover the mixture, and place it in the fridge. The next day, when you are ready to make your baked oatmeal, just combine the wet and the dry ingredients, fold in any mix-ins, and bake.

Option Two: This is my personal favorite way to prepare in advance. Bake the oatmeal the night before and then reheat it in the morning. You can reheat a slice of the oatmeal in the microwave for thirty seconds at a time until hot.

How to Store and Reheat

Store leftovers in an airtight container in the fridge for 4-5 days.
Reheat the baked oatmeal in the microwave for thirty seconds at a time until warm or in the oven at 350 degrees, wrapped in foil, until warmed through.

Can I Freeze Chunky Monkey Baked Oatmeal?

Yes! This is such a great recipe to freeze! Just let it cool completely. Then, transfer it to a freezer-safe storage container, and freeze it for up to 3 months.

You can reheat the oatmeal in the oven at 350 degrees wrapped in foil until warmed through or in the microwave.

Serving Suggestions

This baked oatmeal is perfectly good on its own, but you can also add a drizzle of maple syrup for extra sweetness. I love to top it with a dollop of dairy-free plain or vanilla Greek yogurt or even whipped cream for a little treat. Fresh berries, sliced nuts or seeds, sliced bananas, and nut butter are also delicious options.

If you want to add a boost of protein to your breakfast, you can pair this baked oatmeal with something like these protein packed egg bites with cottage cheese or a slice of this sweet potato and sausage frittata!

More Delicious Oatmeal Recipes

I hope you give this Chunky Monkey Baked Oatmeal a try! It’s just the right amount of sweet, hearty, and perfect to meal prep in advance! If you do give this recipe a try, I want to know! Leave a comment with a star rating below. You can also snap a photo & tag @allthehealthythings on INSTAGRAM. Your reviews help support All the Healthy Things and make it possible for me to continue to create the recipes you know and love.