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Gluten-free Apple Cinnamon Baked Oatmeal Squares

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Looking for a yummy, healthy, and hearty make-ahead gluten-free breakfast? These gluten-free apple cinnamon baked oatmeal squares can be made one day and enjoyed for breakfast the next few days! They’re soft and chewy, and full of chunky apples and cinnamon!

Gluten-free Apple Cinnamon Baked Oatmeal Squares - Great make-ahead breakfast idea. Can grab and go or eat in a bowl with milk or non-dairy milk. These are dairy-free too!

How do you like your baked oatmeal? Sometimes I like it plain and sometimes I like it warmed up and eaten in a bowl with non-dairy milk. I have one kid that likes to grab these and go, while the other likes to mash one up in a bowl of milk. No matter how you like to have baked oatmeal, I think you’ll like this new recipe for gluten-free apple cinnamon baked oatmeal squares.

A couple of years ago, I created these gluten-free maple brown sugar baked oatmeal squares that were a hit with my family. Some of you have tried them too and they were a hit with your family too.

I had made that recipe inspired by my boys’ favorite instant oatmeal flavor. Their other favorite instant oatmeal flavor: apple cinnamon, thus the inspiration for today’s recipe! I think these will remind you of those apple cinnamon instant oatmeal packets a bit, but in a square that you can either have in a bowl with milk or grab and go! Some days just call for portable breakfast bars!

Gluten free Apple Baked Oatmeal Squares

These are also flourless! Yep – the whole grain gluten-free oats are just what you need for these, no flour, no gums.

Oats, real apple chunks and cinnamon are just delicious together!

Notes on ingredients for these gluten-free apple cinnamon baked oatmeal squares:

  • Milk: I’ve made these with regular milk and I’ve also made them dairy-free by using a nut milk or FlaxMilk. Use the option that best suits your specific allergens or dietary needs.
  • To continue the dairy-free theme with this recipe, I used melted coconut oil. I think any oil would work fine in this, if you need to avoid coconut.
  • Oats: As always, be sure to use certified gluten-free oats in this recipe. I use GF Harvest Old Fashioned Rolled Oats which I buy from Amazon here. I highly recommend these safe oats!
  • Use pure maple syrup, not the cheap pancake syrup. I buy jugs of pure maple syrup at Costco.
  • Apple: I like to choose a tart, flavorful apple for these like McIntosh, Braeburn, or Pink Lady. Use your favorite apple!
  • Cinnamon: I love this cinnamon.

The batter for this will be very loose/liquidy when you are done mixing together. THat’s how it should be! But you’ll evenly scoop into the sections of your bar pan and they’ll bake up nice! These are softer than my maple brown sugar version – these don’t get crispy like those do. These stay nice a moist due to the real apple chunks!

Making gluten-free apple cinnamon baked oatmeal squares

I make these in this brownie/bar pan and recommend getting one if you want to make grab and go breakfasts and snacks!

What else will you make with your apples and cinnamon? You’ve got to try these gluten-free apple muffins as they’re so good! And be sure to try my gluten-free apple puff pancake! Want some dessert? Let me suggest my gluten-free apple pear tart for a show-stopping dessert! Want to try a paleo dessert spin? Try this paleo apple crisp!

Is there another flavor of baked oatmeal you’d like me to make? Let me know and I’ll give it a try!!

Gluten-free Apple Cinnamon Baked Oatmeal Squares

Gluten-free Apple Cinnamon Baked Oatmeal Squares Recipe:

Yield: 12 squares

Gluten-free Apple Cinnamon Baked Oatmeal Squares

Gluten-free Apple Cinnamon Baked Oatmeal Squares - Great make-ahead breakfast idea. Can grab and go or eat in a bowl with milk or non-dairy milk. These are dairy-free too!

Looking for a yummy, healthy, and hearty make-ahead gluten-free breakfast? These gluten-free apple cinnamon baked oatmeal squares can be made one day and enjoyed for breakfast the next few days! They're dairy-free too!

Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes

Ingredients

  • 3 cups gluten-free rolled oats
  • 1/3 cup brown sugar
  • 1 1/2 tsp. cinnamon
  • 2 tsp. baking powder
  • 1/2 tsp. salt
  • 1 cup milk or non-dairy milk
  • 2 eggs
  • 1/4 cup melted coconut oil
  • 1/3 cup pure maple syrup
  • 1 1/3 cup diced, peeled apple (about one large apple)
  • 1 tsp. cinnamon

Instructions

  1. Preheat oven to 350°. Spray each square of a brownie/bar pan with cooking spray.
  2. In the bowl of your stand mixer (or a large bowl if you prefer to mix by hand), add the oats, brown sugar, cinnamon, baking powder, and salt. Mix on low speed for 30 seconds.
  3. Add the milk, eggs, melted coconut oil and maple syrup and mix on low speed until well blended.
  4. In a separate bowl, stir together the diced, peeled apple chunks with 1 teaspoon cinnamon.
  5. Stir the cinnamon apples into the oatmeal batter with a spatula until combined. 
  6. Use a 1/4 cup measuring cup or scoop to fill each square of the brownie pan. You'll end up with an even dozen.
  7. Bake at 350° for 20 minutes, or until mixture is set firmly and edges just begin to brown. Remove from oven to cooling rack and let set in pan for 3-5 minutes. Remove from pan and allow to cool completely on cooling rack.
  8. Store at room temperature in sealed container, or wrap individually in plastic wrap or foil for sending to school.

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Gluten-free Apple Cinnamon Baked Oatmeal Squares Recipe

I hope you and your family enjoy these gluten-free oatmeal squares too!

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Kareena

Saturday 24th of February 2024

Have you tried this with flax eggs?

Kristie

Thursday 5th of October 2023

These sure look yummy! Has anyone made them with apple sauce instead of fresh apples? TIA

Landon Caine

Friday 23rd of February 2024

@Kristie,

I wondered the same and decided to experiment since I didn't find an answer either. The only changes I made in this recipe are that I omitted the oil since applesauce is often used as a replacement for oil in recipes & using both may have made the batter too wet. I used plain unsweetened homemade almond milk due to allergies, so I added 1 teaspoon of vanilla extract. I used 1 cup unsweetened slightly chunky, but thick homemade applesauce that I canned, also due to allergies, because I didn't have any apples.

Because oatmeal squares can be crumbly I always mix the batter and allow it to sit for 20 minutes to allow the oats to absorb some of the moisture before filling the brownie pan. The only time mine are crumbly is when I skip this step.

I line the squares of my brownie pan with jumbo sized round paper cupcake liners. Regular cupcake liners aren't deep enough. The jumbo liners perfectly fill the squares and are deep enough to hold all of the batter.

I baked for 20 minutes, cooled in the pan for 5 minutes, then removed the squares to a cooling rack to completely cool. They turned out beautifully & were delicious.

With the changes my version of this delicious recipe is:

3 cups gluten-free rolled oats 1/3 cup brown sugar 1 1/2 tsp. cinnamon 2 tsp. baking powder 1/2 tsp. salt 1 cup unsweetened almond milk 2 eggs 1 teaspoon vanilla extract 1/3 cup pure maple syrup 1 cup unsweetened thick applesauce 1 tsp. cinnamon

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Kay

Thursday 20th of January 2022

Absolutely delicious!! I baked mine in a muffin tin, made 12. They fell apart once I put them on a plate. Maybe the muffins need to cool off to hole together. Crumbly or not, I’ll be making these again! No extra syrup was needed, melted a little butter and we wiped our plates clean😀

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