Cinnamon Apple Baked Oatmeal
This cinnamon apple baked oatmeal turns rolled oats, diced apples, milk, and eggs into a soft breakfast bake. It is spoonable while warm and becomes firmer after resting, making it useful for breakfast portions throughout the week.
The recipe is lightly sweetened with maple syrup and uses small apple pieces so they soften during baking. It is an oatmeal breakfast rather than a fluffy cake: expect a moist, hearty texture with visible oats.
Recipe at a Glance
| Servings | 6 |
|---|---|
| Timing | 15 minutes prep; about 30–35 minutes baking; 10 minutes resting |
| Main equipment | 8-inch square baking dish, at least 2 inches deep |
Why Make This Recipe
- Rolled oats give the bake a familiar, hearty texture.
- Small apple pieces distribute fruit through each portion.
- The bake can be portioned and reheated with a splash of milk.
Ingredient Notes and Substitutions
Use old-fashioned rolled oats. Steel-cut oats need much more liquid and time, while instant oats give a softer texture. Neither is a direct substitution in this recipe.
Choose a firm apple such as Gala, Honeycrisp, or Pink Lady and dice it into ½-inch pieces. Peeling is optional; thinly chopped peel adds some texture.
Milk supplies most of the liquid. Unsweetened plant milk can replace dairy milk, but choose one you enjoy drinking because its flavor will be noticeable. Melt and slightly cool the butter before mixing.
How to Make Cinnamon Apple Baked Oatmeal
1. Prepare the pan
Heat the oven to 375°F (190°C), conventional setting. Lightly grease an 8-inch square baking dish. Core and dice the apples into ½-inch pieces so they soften evenly.
2. Combine dry ingredients
Stir the rolled oats, cinnamon, baking powder, and salt in a large bowl. Break up any baking powder lumps before adding liquid.
3. Whisk the wet ingredients
In another bowl, whisk the eggs, milk, maple syrup, cooled melted butter, and vanilla. The butter should be warm rather than hot so it does not cook the eggs.
4. Assemble the bake
Pour the wet ingredients into the oat mixture, add the diced apples, and stir until evenly combined. Transfer to the baking dish and spread the apples and oats into an even layer. Bake promptly.
5. Bake until set
Bake for about 30–35 minutes, until the top is lightly golden and the center is set without a pool of liquid. Because this is an egg-containing casserole, check that the center reaches 160°F (71°C). Continue baking if needed.
6. Rest before portioning
Rest for 10 minutes so the oats absorb more liquid. Cut or spoon into six equal portions. Serve warm, adding milk at the table if you prefer a softer breakfast.
Tips and Troubleshooting
Avoid a dry bake
Measure the oats without packing them into the cup, or use the gram amount. Stop baking once the center is set and safely cooked.
Make apples tender
Keep the dice small. Large wedges may stay crisp even after the oatmeal is done.
Get neater portions
Let the bake rest before cutting. Warm baked oatmeal is softer and less sliceable than a chilled portion.
Variations
- Replace half the apple with diced pear, keeping the total prepared fruit weight about the same.
- Add ¼ cup chopped walnuts to the mixture if desired. Nuts are optional and change the nutrition and allergen profile.
Cinnamon Apple Baked Oatmeal
Ingredients
Equipment
Method
- Heat the oven to 375°F (190°C), conventional setting. Lightly grease an 8-inch square baking dish. Core and dice the apples into ½-inch pieces so they soften evenly.
- Stir the rolled oats, cinnamon, baking powder, and salt in a large bowl. Break up any baking powder lumps before adding liquid.
- In another bowl, whisk the eggs, milk, maple syrup, cooled melted butter, and vanilla. The butter should be warm rather than hot so it does not cook the eggs.
- Pour the wet ingredients into the oat mixture, add the diced apples, and stir until evenly combined. Transfer to the baking dish and spread the apples and oats into an even layer. Bake promptly.
- Bake for about 30–35 minutes, until the top is lightly golden and the center is set without a pool of liquid. Because this is an egg-containing casserole, check that the center reaches 160°F (71°C). Continue baking if needed.
- Rest for 10 minutes so the oats absorb more liquid. Cut or spoon into six equal portions. Serve warm, adding milk at the table if you prefer a softer breakfast.
Notes
What to Serve With It
Serve warm with plain yogurt, milk, or a spoonful of nut butter. The bake is only lightly sweet, so taste before adding another drizzle of maple syrup. Fresh apple slices can add crunch alongside the softer baked fruit.
Storage and Reheating
Divide into shallow containers and refrigerate within 2 hours, or 1 hour above 90°F (32°C). Keep at 40°F (4°C) or below for 3–4 days. Freeze individual portions for up to 2 months for best quality. Reheat covered with a splash of milk until the center reaches 165°F (74°C). Thaw frozen portions in the refrigerator before reheating.
Frequently Asked Questions
Can I prepare everything the night before?
For a consistent texture, combine the dry ingredients and prepare the wet ingredients separately, refrigerating the wet mixture. Mix and bake in the morning. Oats soaked overnight produce a different texture.
Is this gluten-free?
Use certified gluten-free oats and check all other ingredient labels if required. Oats can be cross-contaminated during processing.
Can I make it without eggs?
Eggs help this version set. An egg-free version needs its own binder and liquid adjustments, so a direct omission is not recommended.
More Recipe Ideas
Explore more Food & Recipes or browse all CookingPassion recipes.
Save this recipe to your Pinterest board so you can find it when planning your next meal.
