Baked Oatmeal Muffins

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Baked Oatmeal Muffins are wholesome, easy to make, and bursting with delicious flavors. Ready in under 30 minutes, this healthy recipe is perfect for meal prepping breakfasts or snacks to enjoy all week long!


If you’re looking for the ultimate breakfast meal prep recipe, this is the one. Baked Oatmeal Muffins are beyond easy to make and are always a huge hit in my home. Oatmeal lovers will also want to try this Baked Oatmeal and Slow Cooker Oatmeal.

These flavorful muffins are made with a combination of ingredients like old-fashioned oats, ripe bananas, almond milk, and maple syrup for the perfect soft texture and dreamy flavor. 

I love prepping a big batch of these oatmeal muffins on Sunday, so the whole family has easy and quick breakfasts to enjoy throughout the week. They also freeze incredibly well, which means you can make as many as you want and freeze them for quick breakfasts or snacks whenever you’re in the mood for some oatmeal deliciousness!

One of my favorite things about Baked Oatmeal Muffins is that they are super versatile, so you can add in a ton of different ingredients to spice up the flavor as you see fit. My girls love helping me with this dish, primarily so they can choose their own add-ins.

You can add nut butter, chocolate chips, chopped fruit, chia seeds, nuts, or anything else you think would work well. There are tons of options for add-ins, so you can have fun with this recipe and mix it up depending on what you have at home.

Whether you’re on the hunt for healthy breakfast recipes for the family or easy snack recipes to bring along to work or school, these easy Oatmeal Muffins have got you covered. Simply mix, bake, and enjoy!

Oatmeal muffins made with rolled oats and bananas stacked on a plate.

Baked Oatmeal Muffin Key Ingredients

To make this deliciously healthy breakfast, you will need the following key ingredients:

  • Old fashioned oats: Make sure to grab old fashioned, rolled oats for this recipe. Instant oats and steel cut oats will not. These are the best oats for recipes like granola bars, cookies, and muffins. This recipe does not use any regular flour. It is more of a baked oatmeal than a traditional muffin recipe. 
  • Flaxseed meal: Mild in flavor and loaded with omega-3 fatty acids and fiber, flaxseeds are a super healthy addition to our muffins!
  • Bananas: These are often used as a healthy substitute for oil in baking. When cooked, bananas develop a sweeter flavor that tastes amazing in this recipe. Make sure to use the ripest bananas you can find; don’t be afraid of the brown ones!
  • Almond milk: I like to use plain unsweetened almond milk here, but you can also use skim or regular milk if you like.
  • Maple syrup: This adds just the right amount of sweetness to the muffins. Feel free to swap it out for honey, brown sugar, or agave, if needed.
  • Vanilla extract: There’s a reason why you almost always see this ingredient in recipes for baked goods! Vanilla extract has an amazing ability to enhance the flavors of the rest of our ingredients, making them even more delicious.

Recipe Variations

If you’re looking to get creative, here are some of my favorite ways to switch up this dish. Just add right to the oatmeal muffin batter. 

  • Add in chopped fruit. Some of my favorite types of fruit to add to oatmeal muffins include strawberries, blueberries, apples, peaches, and raspberries. Dried fruit like apricots, raisins, cranberries, and dates are also delicious. 
  • Add chocolate chips. You can never go wrong with chocolate. Try adding your favorite chocolate chips, either whole or chopped.
  • Add nuts or seeds. Or both! Some of my top choices include almonds, pecans, walnuts, chia seeds, hemp seeds, and flax seeds.
  • Mix in nut butter. Try adding some nut butter for a delicious nutty flavor, extra protein, and heart-healthy fats. Peanut butter and almond butter are my top picks.
  • Add protein powder. Looking to up your protein intake? Try adding a scoop of your favorite protein powder to this recipe! Both vanilla and chocolate would work well, depending on the flavor profile you’re going for.
  • Swap out the bananas. Whether you’ve got a banana allergy or are looking to cut down on carbs, feel free to swap out the bananas in this recipe for applesauce, butternut squash, or sweet potatoes.

Oat muffins made with rolled oats, bananas, and flaxseed baked in muffin cups with maple syrup and fruit on the side.

How to Store Baked Oatmeal Muffins

Baked Oatmeal Muffins make a fantastic meal prep recipe because they keep really well both in the fridge and in the freezer. Before storing this dish, make sure you give the muffins time to cool down to room temperature. Once they’ve cooled, you can transfer them to an airtight storage bag or container and store them in one of two ways:

  • In the fridge for up to 1 week.
  • In the freezer for up to 3 months.

Frequently Asked Questions

Below you will find the answers to some of the most frequently asked questions about this delicious dish:

If you’ve frozen the muffins to store them for longer and are ready to eat them, you can reheat them in one of two ways. First, you can reheat them in the microwave for 30 seconds. If you prefer to reheat them in the oven, you can set the oven to 300°F and reheat them for 20 minutes.

When it comes to most baking recipes, my personal preference is old-fashioned/rolled oats. Quick cooking oats can be used in a pinch, but I don’t recommend using steel cut oats in this recipe, as they take longer to cook and require a different ratio of liquids to oats. Instant oats should not be used either. 

There are tons of great options you can use, depending on your flavor preference. Some of my favorite choices for muffin add-ins include chopped fruit, nuts, seeds, chocolate chips, and nut butter.

Absolutely! This dish is made with wholesome ingredients like old-fashioned oats, bananas, almond milk, and maple syrup. It’s dairy-free, gluten-free, sugar-free, and packed with protein and fiber. When consumed in moderation, these muffins make a great addition to a healthy diet.

Baked oat muffins with white liners stacked on a plate with rolled oats, bananas, and almond milk.
The Recipe
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Baked Oatmeal Muffins

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  • 2 cups old fashioned oats
  • 1 tsp cinnamon
  • 1 tsp baking powder
  • 1/2 tsp kosher salt
  • 2/3 cup unsweetened almond milk (or skim)
  • 2 ripe bananas, mashed
  • 3 tbsp pure maple syrup
  • 1 tsp vanilla extract
  • 2 eggs

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Preheat the oven to 375 degrees. Spray standard muffin tin with cooking spray or line with muffin liners. In a large bowl, mix together the oats, flaxseed meal, cinnamon, baking powder, and salt.

Oatmeal, baking powder, cinnamon, and flaxseed in a bowl.

In another bowl, mix together the milk, bananas, egg, maple syrup, and vanilla extract.

Eggs, almond milk, bananas, maple syrup, and vanilla extract in a bowl.

Add the wet ingredients to the dry ingredients and stir until combined.

Eggs and banana being stirred in rolled oats in a bowl.

Fill each muffin around 3/4 of the way full and bake for about 18-20 minutes until a toothpick comes out clean. Let cool for at least 10-15 minutes before serving and then place on a wire rack.

Oatmeal muffins in a muffin tin before being baked.
Nutritional Facts
Serving Size: 1 muffin
Amount Per Serving
Calories 102
Calories from Fat 17
% Daily Value *
Total Fat 2g
Saturated Fat 0g
Monounsaturated Fat 0g
Polyunsaturated Fat 0g
Cholesterol 31mg
Sodium 150mg
Total Carbohydrate 18g
Dietary Fiber 2g
Sugars 6g
Protein 3g

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Nutritional Values provided are estimates only and may vary based on the preparation method.


Optional: 1 cup mix-ins (berries, chocolate chips, seeds, etc)
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About the author Meet Kristen McCaffrey
Hi, I’m the cookbook author, recipe developer, and food enthusiast behind Slender Kitchen. I am obsessed with making healthy food that is easy to prepare and absolutely delicious. Meal planning is my secret weapon and I hope I can make meal time easier for you with our tried and tested recipes and foolproof meal plans. Learn More
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On Baked Oatmeal Muffins
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Shelly Strauss
April 29, 2022 - 09:49
I have flax seeds, but not flax seed meal. Does it make a difference?
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October 20, 2022 - 17:53
That will work! Since the recipe has eggs, they aren't being used as a binder, just as a way to boost the nutrition.
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April 25, 2022 - 15:29
These sound amazing.
I don't have flax seed meal, though. Can I leave it out or substitute something else for it?
Or, if I buy flax seed meal, what else can I use it in?
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April 25, 2022 - 15:42
There are lots of options! You can swap in chia seeds or simply leave it out. If you decide to buy flaxseed meal, you can use it in pancakes, muffins, smoothies, and regular oatmeal to boost the nutritional content.
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