Warm Apple Oatmeal Bake with Cinnamon and Maple Glaze

The best apple oatmeal bake you will ever taste! Crispy on the outside, moist on the inside, sweet and addictive.

This is an eggless oatmeal bake made without flour—just oats—so it’s naturally suited for those avoiding gluten.

Apples are in season, which makes this the perfect time to bake apple desserts. I’ve been in an apple-baking mood and have tried several favorites, but this apple oatmeal bake has quickly become a top pick.

This recipe transforms oats, apples, walnuts and butter into a comforting, slightly crunchy bake that’s hard to resist. I tested and refined it several times and every batch came out delicious.

Why I love this apple oatmeal bake

Gluten free option — made with oats instead of flour, so it can work for those avoiding gluten.
Eggless — no eggs are required.
Make-ahead friendly — bake a day ahead and refrigerate; reheat slices in the microwave for a quick breakfast.
Pairs well with vanilla pudding, custard, caramel or a scoop of ice cream.
Great for meal prep — easy to slice and serve throughout the week.
Versatile — serves as breakfast, brunch, dessert or an afternoon treat.

This isn’t a traditional apple oatmeal bake, but it’s simple and reliable. You can make it with or without walnuts and it will still be tasty.

The method is straightforward: pulse oats and nuts into a coarse flour, layer the oat mixture with grated apples, and top with thin slices or grated butter (not melted). Bake for 35–40 minutes until the top is golden and crisp.

Serving tip: Warm slices and pour vanilla pudding or caramel over each portion, or serve with vanilla ice cream.

Ingredient substitutions

Walnuts — replace with pecans or hazelnuts, or omit entirely.
Sugar — you can use superfine (caster), powdered/icing sugar, or brown sugar instead of granulated.
Apples — Granny Smith works well for balance, but any apple you have on hand is fine.
Cinnamon — optional, but it complements the apples nicely.

Want to see how to make Apple Oatmeal Bake? Watch the video!

Apple Oatmeal Bake

Crispy on the outside, moist on the inside, and sweetly addictive — an easy eggless, flour-free apple oatmeal bake.

Prep Time: 25 minutes

Cook Time: 35 minutes

Total Time: 1 hour

Servings: 8 Portions

Author: Julia

Ingredients

2 cups Rolled Oats (200 grams)
1½ stick Unsalted Butter (175 grams)
6 Large Apples (at least 1.7 pounds/800 grams)
1 cup Walnuts (100 grams)
⅔ cup Granulated Sugar (170 grams)
2 teaspoons Cinnamon optional

Instructions

Process the oats and walnuts in a food processor until they reach a flour-like texture. Grate the apples and set aside.
In a mixing bowl, combine the processed oats and walnuts with the sugar and cinnamon, if using. Grease an 8.5×7-inch (22×18 cm) ovenproof dish with butter.
Cover the bottom of the dish with about 1 cup of the oat mixture and press down lightly. Add half of the grated apples, then spread 1½–2 cups of the oat mixture over the apples. Repeat with the remaining apples and oat mixture to make layers.
Grate or thinly slice the butter and distribute it evenly over the top surface.
Bake in a preheated oven at 400°F (200°C) for about 35 minutes, or until the top turns golden brown.
Serving suggestion: warm slices and pour over vanilla pudding, custard, or a drizzle of caramel.

Notes

On the day it’s baked the dish is quite soft; refrigerating overnight firms it up and makes slicing easier. Reheat portions in the microwave. This recipe is excellent for make-ahead breakfasts or meal prep.

Nutrition

Calories: 385 kcal
, Carbohydrates: 32 g
, Protein: 5 g
, Fat: 27 g

Nutrition information is an estimate provided by an online calculator and may vary with ingredient brands, substitutions, and portion sizes.

Course: Breakfast, Dessert

Cuisine: American

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