Apple Cinnamon Oat Slice 🍎

If you’re looking for a cozy breakfast that makes your whole house smell like fall, you have to try this apple cinnamon oat slice! It is incredibly delicious, packed with apple flavor, and has the most amazing soft, tender texture. Honestly, it almost tastes like a buttery cinnamon apple cake for breakfast!

And the best part? It’s made with simple ingredients and everything comes together in one bowl. No complicated steps, no fancy ingredients, and no big mess in the kitchen.

I made this with two apples, and one little trick makes such a difference when you’re making it for kids. I grate the apples on the smaller side of the grater, so the apple becomes almost like a soft apple puree throughout the batter, making it easy for little one’s to eat. You don’t end up with noticeable apple shreds or chewy pieces of apple that some kids might not like. The grated apple practically melts right into the slice as it bakes, giving every bite so much natural apple flavor and keeping the inside wonderfully moist.

The combination of apples, cinnamon, butter, and maple syrup makes this smell absolutely incredible while it’s baking. My whole house smelled like fall, and we all loved it!

Why You’ll Love This Apple Cinnamon Oat Slice

🍎 Packed with apple flavor: Two grated apples make sure you get plenty of apple in every bite.

🥣 One-bowl recipe: Everything gets mixed together in one bowl before going straight into the baking pan.

🤎 Kid-friendly texture: Finely grated apples disappear into the batter, making the finished slice soft and tender without obvious apple pieces.

🍁 Naturally sweetened: Maple syrup and apples provide all the sweetness, with no need for refined sugar.

🧈 Buttery and delicious: The butter gives these slices that rich, cozy flavor that makes them feel almost like apple cake.

🌾 Oat-based: Instant oats and flour come together for a soft, hearty breakfast that’s easy to slice, serve and eat.

The Secret Is How You Grate the Apples

This is probably my favorite part of this recipe!

I use the small side of a box grater to grate both apples. You want the apple to be very fine, almost like a chunky applesauce rather than long strands.

This is especially helpful if you’re making these for toddlers or kids who aren’t fans of fruit pieces in baked goods. The apples soften completely as they bake and blend right into the oat mixture. You still get all that delicious apple flavor, but without big pieces or noticeable shreds.

It also adds so much moisture to the slice, which helps give it that soft, almost cake-like texture.

A Cozy Fall Breakfast

There is something about the combination of apple + cinnamon + butter that instantly makes a recipe feel like fall.

As these bake, the cinnamon and apple smell fills the kitchen, and it honestly makes your house smell amazing. This is one of those recipes where everyone starts wandering into the kitchen asking when it will be ready.

The texture is soft and tender with slightly golden edges, and the inside is full of warm cinnamon apple flavor.

I love serving it warm, but it’s also delicious once cooled and makes an easy breakfast or snack to grab throughout the week.

How to Serve It

You can absolutely serve this apple cinnamon oat slice just as it is, but there are a few toppings that take it to another level.

Try it with:

• A small drizzle of maple syrup
• A spoonful or drizzle of plain or Greek yogurt
• A drizzle of nut butter
• A sprinkle of extra cinnamon
• A little extra finely grated apple
• A combination of yogurt and nut butter

For babies and younger toddlers, you can skip the maple syrup on top since the slice is already sweetened with maple syrup and apples.

Serving Apple Cinnamon Oat Slice for Babies and Kids

This is a great option for little ones who are ready for soft, easy-to-hold foods. The finished slice is soft and tender, making it easy to cut into age-appropriate strips or small pieces depending on your child’s developmental stage.

For babies, make sure the slice is fully baked and soft enough to easily squish between your fingers. Always serve according to your child’s developmental readiness and supervise while eating.

If serving to a baby under 12 months, remember that maple syrup is an added sweetener, so you may prefer to save this recipe for older babies or toddlers. You can also make the slice without the extra maple syrup on top.

For older kids, serve it as a quick breakfast with yogurt, nut butter, or some fresh fruit on the side.

Nutritional Benefits

This apple cinnamon oat slice is not only cozy and delicious, but it also has some great nutritional benefits from the simple ingredients.

🍎 Apples: Two apples add natural sweetness along with fiber, vitamin C, and antioxidants. Because the apples are grated finely and baked right into the slice, you get apple in every bite.

🌾 Oats: Oats provide carbohydrates for energy along with fiber, including beta-glucan, which can help support healthy digestion. They also contribute a little plant-based protein, iron, magnesium, and other important nutrients.

🥚 Egg: The egg adds protein and healthy fats while also providing nutrients like choline, which is important for brain and nervous system development.

🧈 Butter: Butter adds richness and fat, which helps make these slices soft and satisfying. Fat is also important for helping the body absorb fat-soluble vitamins.

🥛 Milk: Milk contributes protein and calcium, which are important for growing bones and teeth. If using a dairy-free milk, choose one that is fortified with calcium and vitamin D for a similar nutritional boost.

🍁 Maple syrup: Maple syrup provides sweetness and helps give the slice its delicious caramel-like flavor. Since it is still an added sweetener, you can adjust the amount based on your family’s preferences and age.

🤎 Cinnamon: Cinnamon adds plenty of warm flavor without needing a lot of extra sweetness, making it easy to create that classic apple-cinnamon taste with simple ingredients.

Overall, this is a nice combination of carbohydrates, fiber, protein, fats, and micronutrients, making it a satisfying breakfast or snack. I especially love pairing a slice with yogurt or nut butter for even more protein and healthy fats, or serving it alongside some fruit for a more complete breakfast.

Tips for Making Apple Cinnamon Oat Slice

Grate the apples finely. This is key to getting that smooth, apple-packed texture without noticeable apple shreds.

Don’t squeeze out the apple juice. The moisture from the apples helps keep these slices soft and tender.

Use a flavorful apple. Sweet apples work beautifully here, but you can also use a combination of sweet and slightly tart apples for more flavor. I used honey crisp apples.

Let it cool before slicing. It will be very soft when it first comes out of the oven and will firm up as it cools.

Don’t overbake. You want the center cooked through but still soft and moist.

Add your favorite topping. A little yogurt, nut butter, or maple syrup makes this feel extra special.

Storage Instructions

Store leftover slices in an airtight container in the refrigerator for up to 4 days.

You can warm individual pieces for a few seconds in the microwave before serving, or enjoy them cold or at room temperature.

These also make a great freezer-friendly breakfast. Once completely cooled, slice into individual portions and freeze in a freezer-safe container. Warm in microwave for a little, straight from the freezer.

Frequently Asked Questions

Can I use quick oats instead of instant oats?

Yes. Quick oats should work well in this recipe. The texture may be slightly different, but they will still give you a soft, tender oat slice.

Can I use a different type of apple?

Absolutely! Sweet apples work especially well (I used honey crisp apples), but you can use whatever apples you have on hand. If your apples are very tart, you may want to adjust the maple syrup to taste.

Do I have to peel the apples?

Yes, I recommend peeling the apples.

Can I skip the maple syrup?

You can reduce it, but keep in mind that the maple syrup contributes both sweetness and moisture. If you’re making this for a younger baby, I would recommend considering the age-appropriate sweetener guidance above.

Can I make these ahead of time?

Yes! They’re perfect for making ahead. Bake them, let them cool completely, slice, and store in the refrigerator so you have an easy breakfast ready to go.

Can I freeze them?

Yes. Place them in a freezer-safe container and freeze for up to about 2 months for the best quality.

What You Need:

Grater 

Mixing Bowl

9 in. square baking dish 

If you enjoyed this recipe, here are more fall apple ideas:

Cozy Apple Bowl

Apple Custard Oatmeal

Apple Cinnamon Oat Bars 

Apple Banana Smoothie