lemon baked oatmeal

Lemon Baked Oatmeal (Vegan + Gluten-Free)

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This soft and citrusy Lemon Baked Oatmeal is the only healthy lemon recipe you’ll ever need. It’s loaded with plant-based protein (that you can’t even taste), and it’s great for meal prep. You only need the baking dish to make it! Vegan & gluten-free too!

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healthy lemon recipes

One square of this healthy Lemon Baked Oatmeal is only 133 calories and 2 grams of fat! It also gives you a whopping 6.9 grams of protein! Which means this breakfast will keep you full! Average baked oatmeal recipes have little to no protein content. 

lemon baked oatmeal

I absolutely love how it’s sweetened with banana and maple syrup. AND that you only need the baking dish to make it. No extra dishes! This will be your new go to for healthy meal prep breakfast recipes!

Gluten-free, Dairy-free, Vegan Baked Oatmeal!

Gluten-free: All of my baked oatmeal recipes are gluten-free! You would never guess it either, especially with my Chocolate Baked Oatmeal. This healthy lemon oatmeal recipe calls for gluten-free rolled oats. Bob’s Red Mill is a trusted gluten-free brand you can use!

Dairy-free: There’s also no dairy in this baked oatmeal! You can use any plant based milk. I use unsweetened almond milk.

Vegan: The protein powder we use is also plant based, making this the perfect vegan breakfast!

lemon oatmeal
toppings for baked oatmeal
Delicious served with unsweetened almond milk!

How to Make this Healthy Vegan Breakfast Recipe

Just like my Chocolate Chip Cookie Baked Oatmeal and Chunky Monkey Baked Oatmeal recipes, we only use the baking dish to whip this healthy, delicious breakfast up!

Here are the steps:

  1. Get out a 2-quart baking dish (here is the exact one I use).
  1. Using the back of a fork, mash the ripe bananas right in the baking dish.
  1. Add in all other ingredients and stir it up!
  1. Pop it in the oven at 350 F. for 40 minutes and serve with fresh bananas, berries, peanut butter and plant based milk!

You can take a peek at my other baked oatmeal recipe to see a quick video of these steps. I also have videos on Instagram of me making this baked oatmeal!

lemon baked oatmeal recipe

Easily Make this a Blueberry Lemon Baked Oatmeal!

You can easily make this baked oatmeal into a lemon blueberry flavor by adding about ½ Cup of fresh or frozen blueberries! If you leave the blueberries out, it will taste more like a lemon bar.

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healthy meal prep breakfast
Wish I could teleport this bite to you.

Toppings for Baked Oatmeal

Baked Oatmeal is delicious on its own, but here are a few ideas of what you can serve with it!

  • Plant Based Milk
  • Powdered Peanut Butter Drizzle
  • Regular Peanut Butter
  • Nut Butter of Choice
  • Fresh Berries
  • Fresh Banana
  • Chopped Nuts
  • Chocolate Chips
Toppings with baked oatmeal
the best baked oatmeal recipe
So soft and chewy!

How to Store Baked Oatmeal

Store baked oatmeal in the fridge for up to a week. When ready to eat, microwave for about 40 second or reheat in the oven. You can also eat it cold! Serve with desired toppings. Baked oatmeal topping ideas are listed above.

Love Easy Oat Recipes? Try these out!

Chocolate Chip Cookie Baked Oatmeal

Chunky Monkey Baked Oatmeal

Chocolate Baked Oatmeal

Peanut Butter Cup Overnight Oats

I cannot wait for you to give this Lemon Baked Oatmeal a try! Please snap a picture and share it with me! 

Seeing your kitchen creations makes my day and encourages me to keep making new recipes for you!

Happy Oatmeal Bakin’!


Lemon Baked Oatmeal pinterest
Yield: 9 servings

Lemon Baked Oatmeal

lemon baked oatmeal

This soft and citrusy Lemon Baked Oatmeal is the only healthy lemon recipe you’ll ever need. It’s loaded with plant-based protein (that you can’t even taste), and it’s great for meal-prep. You only need the baking dish to make it! Vegan & gluten-free too!

Prep Time 5 minutes
Cook Time 40 minutes
Total Time 45 minutes



1. Preheat the oven to 350 F.

2. In a 2 quart baking pan mash the banana with the back of a fork. Add all other ingredients into baking dish and stir until mixture is combined.

3. Place in the oven to bake at 350 F. for 35-40 minutes until golden brown.

4. Let cool for a few minutes or until set and serve with fresh berries, banana slices, nut butter, or your favorite milk! 

5. Store in the fridge for up to a week and enjoy a premade healthy breakfast all week long!


    1. Don’t have bananas? You can sub the banana with ½ Cup of your favorite yogurt or 1 Cup Unsweetened Apple Sauce. Adjust the amount of honey/maple syrup to taste if needed.
    2. Any plant based protein powder works! If your protein powder is already sweetened, you may want to adjust the amount of honey to little or none at all (depending on how sweet you enjoy your foods). I DON'T recommend using whey protein powder because it can cause a chewy, almost crispy texture. I've had people use whey that love it still, but personally, I would avoid whey for these texture reasons.
    3. You can use any liquid of choice for this recipe. You can swap the milk for all water or do a combination that totals 2 cups.
    4. Most oats are gluten-free, just make sure by checking the packaging! I love this brand.

Use code "shh20" for FREE SHIPPING off your online nut-butter orders at Georgia Grinders!

Be sure to tag @secretlyhealthyhome on Instagram, Facebook or Pinterest with a picture of your beautiful baked oatmeal!

I love seeing your kitchen creations so please leave a comment and rate the recipe if you make it! It really helps support me and allows me to keep making recipes for you!

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Nutrition Information:



Amount Per Serving: Calories: 133Total Fat: 2gTrans Fat: 0gCarbohydrates: 23.5gNet Carbohydrates: 20.7gFiber: 2.8gSugar: 8.3gProtein: 7g

Did you make this recipe?

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  • Laura

    This sounds divine. I don’t use protein powders but used hemp seeds, also did use unsweetened soymilk (?this was 38 gm protein for the recipe). I choose soymilk as it has 9 gm protein per cup vs 1 gm in almond milk or 3 gm in oatmilk) my portion is larger as I usually eat 1/2 c oats for breakfast. Tons of protein options. Thanks again for this treat for breakfast. Oats have 5 gm protein per 1/2 cup. So I am swimming in at least 13 gm now excluding other add ins. Yeah!!!

    • Claire

      Laura, can’t wait for you to try it! Sounds like you will make it even more protein packed and I love that. Soy milk is a great option. That’s what i love about these baked oatmeal recipes, they’re so versatile. Let me know how it turns out when you use something other than protein powder because I have not tried that yet. Thank you again for your comment 🙂

  • Megan

    This is my new favorite summer/spring breakfast! Your lemon oatmeal bake with strawberries on top is AMAZING!

    For my recipe, I used steel cut oats in the same amount listed in the recipe. I only have vanilla plant protein powder so I used that in the same amount listed. I tripled the lemon zest (used 3 tbsp) because I LOVE lemon flavor, to compensate for the vanilla protein powder flavor and dense steel cut oats, and because my zest was previously frozen then thawed in my fridge (wasn’t sure how strong the zest would taste). I used the same amounts of lemon juice maple syrup listed. Next time, I might not add any maple syrup because my protein powder has stevia in it, so the end product was a bit too sweet for my taste.

    Overall, if I have lemons on hand, forget cookies, cakes and drinks! I’m making this oatmeal bake! It even tastes like it’s own dessert!

    Thanks for the recipe!

    • Claire

      Megan, that is awesome! I am so glad this is your new favorite! Love how you made it your own and added even more lemon! So yummy! And yes, sweetened protein powder definitely can replace the maple syrup or honey. Thank you so much for sharing and reviewing! Also, I am so impressed it worked with steel cut oats! I tried doing baked steel cut oats once and it DID NOT work for me haha. You’ll have to tell me your secret 🙂

  • Amy

    Super yummy!! One of my favorite baked oatmeal recipes!

    • Claire

      Amy! I am so glad you love this baked oatmeal flavor! Lemon is just the most refreshing flavor! Thank you so much for leaving such a nice comment 🙂 Happy Oatmeal Bakin’!

    • Suzanne

      I’m not a fan of protein powder. Is there another replacement I can use?

      • Claire

        Hi Suzanne! You can just omit the protein powder. Let me know how it turns out! 🙂

  • Haley

    This!!! I was skeptical at first; I love SHH baked oatmeal but I’m not a huge citrus person. Tried this topped with coconut mylk and blueberries and it is SO good! A light but filling breakfast I enjoyed. I usually use the Trader Joe’s protein powder, and it works great in this, but I tried brown rice protein powder once and it was good too (just less sweet).

    • Claire

      Yay!!! So glad you loved it even though you’re not a big citrus person. How fun is that! I also love how you’ve tried it with different protein powders 🙂

  • Tara

    Love this recipe, I am making it for the 2nd time and follow it as written. I like it with raspberries on top. I consider it to make about 6 servings instead of 9, especially if this is all I am having for breakfast. It keeps me fueled for hours 🙂

    • Claire

      Hi Tara! I am so glad you love this recipe so much! Makes my day to hear that. Thank you for leaving this comment and supporting me. And yes, I usually eat about 2 servings when it’s divided into 9 anyways. Enjoy!!! 🙂

  • Paulette

    Delicious! What a great change-up from my “usual” morning bake! I used the zest and juice of a large lemon which comes close to maybe a bit more of each if measuring. I left out the protein powder since I didn’t have enough and I used 3 tablespoons of maple syrup though I could have left it out because lemon is meant to be more tart than sweet in my mind. Baked it in an 8×8 silicone cake pan for 40 minutes but I think it could have used a bit longer as the texture is still more oatmeal than baked oatmeal. I find silicone needs a bit longer for most things. Holds its shape while warm though. Will definitely make again!

    • Claire

      I am so glad you love this recipe!!! Baked oatmeal definitely is a great change-up. Love how you were able to omit the protein powder and it still worked well. Thanks for making it and leaving this comment. Such helpful feedback for me 🙂


  • Tracy

    I’m making these today. I have two enormous lemon trees in my yard and it’s harvest time so I’m making all things lemon. 🍋 It’ll be nice to not have to make oats every single morning

    Can I add flax seed to the mix? We are big on fiber and omegas around here

    Thanks and happy new year 🎊

    • Claire

      Hi Tracy! Oh, I’m jealous, you must live somewhere warm to have a lemon tree 😉 YUM! Can’t wait for you to make this baked oatmeal. It’s probably one of my favorites. And yes, you can definitely add some extra ground flax to the mix 🙂 If you’re thinking about 1/4 cup you may want to add a touch more milk. Let me know what you think!


  • Donna

    This is sooooo yummy! I was over eating oatmeal but thought I would give this a try. Sure glad I did. I made it without the powders, as well. Thanks for the recipe.

    • Claire

      I am so glad you love this lemon baked oatmeal! Definitely one of my favorite flavors too. If you want to try more baked oatmeal flavors I have lots more on the blog too 🙂 Enjoy!

  • Ali

    First of all, I have made this recipe many times and it is great. But I want to add more veggies to my diet. Would this recipe work if I added shredded zuchinni?

    • Claire

      I’m so glad you like this baked oatmeal recipe! Yes you can definitely add shredded zucchini or riced cauliflower to this recipe. I’d do about 1/4 cup of zucchini with the original recipe and then for riced cauliflower you can do 1/2 cup in replacement of 1/2 cup of the oats. Let me know how it turns out! 🙂

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