This easy vegan banana baked oatmeal takes just minutes to prepare with 4 simple ingredients and is ready in 30 minutes for a healthy breakfast recipe.

A slice of baked banana oatmeal topped with berries and peanut butter on a plate.


I like to prep a batch of these on Sundays and stash them in the fridge as an easy make-ahead breakfast or snack for busy mornings.

They’re perfect for a quick, energizing, easily digestible snack before early morning workouts or grab for a healthy snack any time of day. You can eat them cold or reheat in the oven or microwave to enjoy warm.

This recipe is super simple and calls for just 4 ingredients. This recipe is more of a functional, everyday breakfast or snack than a fancy brunch table dish but I love it for a simple, quick and breakfast option.

It’s best with toppings like berries and yogurt. You can also easily customize it with different add-ins like chocolate chips, walnuts or blueberries.

For more healthy oatmeal recipes, these Vegan Baked Oatmeal Cups, Blueberry Oatmeal Cups, Simple Creamy Banana Oatmeal and Baked Berry Protein Oatmeal are great too.


  1. Rolled Oats. This recipe works best with rolled oats, also known as whole oats or old-fashioned oats. Large flake oats are suitable as well. The recipe will still work with quick oats or instant oats but I’d recommend using whole oats for best results. This recipe does not work with steel cut oats but you can try this Vegan Baked Steel Cut Oatmeal Recipe.
  2. Banana. You’ll need two ripe bananas to make this recipe. The banana acts as a binder and helps to sweeten the dish.
  3. Chia or Flax Seed. You can use either chia seeds or ground flaxseed to help bind the recipe.
  4. Almond milk. I used almond milk for the liquid but any plant-based milk such as cashew milk, soy milk or oat milk work.

This list is not complete. Please see the recipe card at the end of the post for the complete ingredient list with measurements and detailed instructions.

Variations & Add-Ins

  • Almond Joy Baked Oatmeal: Add 1/4 cup each chocolate chips, chopped almonds and shredded coconut. Or try this Vegan Banana Oatmeal Bars with dates and chocolate.
  • Peanut Butter Banana Baked Oatmeal: Add 1/4 cup natural peanut butter. Chocolate chips would be amazing in this too. Almond butter works too.
  • Baked Apple Oatmeal: Add 1/2 cup diced apple, 1/2 tsp of ginger and 1/4 cup of chopped walnuts. Or use this Apple Cinnamon Baked Oatmeal.
  • Carrot Cake Baked Oatmeal: Add 1/3 cup each raisin and grated carrot. Some coconut and pineapple are good in this too. Or use this Carrot Cake Baked Oatmeal recipe.
  • Blueberry Oatmeal Bake: Add 3/4 cup of fresh blueberries and use the optional cinnamon and vanilla. Coconut and ginger are good additions to this.
  • Add any of the following up to 1 cup: chocolate chips, shredded coconut, chopped apples, chopped dates, chopped almonds, chopped walnuts, fresh blueberries, raspberries or chopped strawberries, any chopped fresh fruit.
  • Topping Ideas: I love blueberry and peanut butter, tahini and chia seed jam, sliced banana and almond butter or cinnamon sautéed apples and walnuts.
  • Sweetening: The recipe as written is not super sweet. If you’d like to sweeten it up a bit, add 2 tablespoons of pure maple syrup, raw honey (not vegan), brown sugar or coconut sugar.
  • Baking Powder: I didn’t add baking powder to my recipe but many baked oatmeal recipes do. If you’d like to add a bit of lift to the finished dish, add 1 tsp of baking powder to the recipe and make sure you use the salt as well.

Step-by-Step Instructions

Oven baked oatmeal is very easy to make with minimal ingredients and can be customized with add-ins like chopped nuts, coconut or berries.

This version of baked oatmeal is made with mashed banana. To make it, all you need to do is mash up some ripe banana then mix with oats, ground flaxseed, cinnamon and non-dairy milk of choice and bake in the oven until firm.

Step 1. Mash the banana in a metal or glass baking dish. I used an 8×8 square dish.

You can use a fork or masher to mash the banana into a smooth paste.

Peeled banana in a glass baking dish being mashed with a fork.

Step 2. Add the rest of the ingredients. I used rolled oats, ground flax, cinnamon, sea salt and almond milk.

Rolled oats, ground flax, cinnamon and mashed banana with a wooden spoon in a glass baking dish.

Step 3. Mix well then bake for 30 minutes at 350 degrees F until firm.

Mixed baked oatmeal ingredients in a glass baking dish before going in the oven.

Step 4. Once it comes out of the oven, let it sit for 10-15 minutes then slice into 6 equal pieces.

Finished baked oatmeal recipe in a glass baking dish on a grey back ground.

It can be enjoyed right away with your favorite toppings or stored in the fridge for later and enjoyed cold or reheated as needed.

A slice of baked banana oatmeal topped with peanut butter and berries on a plate.


Can I use coconut milk in this recipe?

Yes. You can use carton coconut milk 1:1 to replace the almond milk. If you’re using full-fat coconut milk, use up to 3/4 cup with 1 cup almond milk or water. If you’re using light coconut milk, use up to 1 cup with 3/4 cup almond milk or water.

How long can I store baked oatmeal in the fridge?

You can store baked oatmeal covered in the baking dish or transfer slices to an airtight container in the fridge for up to 1 week.

Can you freeze baked oatmeal?

Baked oatmeal can be frozen in individual servings and reheated from frozen or thawed in the fridge or at room temperature and then reheated.

Did you try this recipe? I’d love to hear about it! Scroll down to the comment section to leave a star rating and review.

Save This Recipe Form

Want to save this recipe?

Enter your email below & I’ll send it straight to your inbox. Plus you’ll get new recipes from me every week!

clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
A slice of baked banana oatmeal topped with berries and peanut butter on a plate.

Easy Banana Baked Oatmeal

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 16 reviews
  • Author: Deryn Macey
  • Prep Time: 5 mins
  • Cook Time: 30 mins
  • Total Time: 35 minutes
  • Yield: 6
  • Category: Breakfast
  • Method: Oven
  • Cuisine: Vegan
Save Recipe


This super easy baked oatmeal recipe is perfect for easy breakfasts and pre-workout snacking. Enjoy a slice warm from the oven topped with berries and peanut butter then store the rest for quick breakfasts all week.



  1. Pre-heat the oven to 350 degrees F.
  2. Place the banana in an 8×8 square baking dish. Use a fork to mash it into a smooth paste.
  3. Add the oats, flax, milk, salt, cinnamon, and vanilla and mix well.
  4. Bake in the oat mixture in the oven for 30 minutes until firm and golden brown on top.
  5. Let cool for 15 minutes in the pan before cutting into 6 squares. Serve right away or store in the fridge up to 4 days. The baked oatmeal squares can also be frozen for up to 3 months in an airtight container.


You can double the recipe and use a larger casserole-sized dish to make 12 oatmeal squares.

The only sweetness in these comes from the banana. If you’d like it a little sweeter, add 2 tbsp brown sugar,, honey, maple syrup or coconut sugar.

Let cool before storing. You can store it covered in the baking dish or transfer slices to an airtight container in the fridge for up to 1 week. Enjoy slices cold as a snack or reheat as is or with a splash of your favourite plant-based milk. Baked oatmeal can be frozen in individual slices and reheated from frozen or thawed in the fridge or at room temperature.


  • Serving Size: 1
  • Calories: 152
  • Fat: 4 g
  • Carbohydrates: 27 g
  • Fiber: 4.5 g
  • Protein: 5 g