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Easy Apple Cinnamon Baked Oatmeal

By Ahsan ul Haq · Published: 18 October 2026 · Last updated: 18 October 2026 · How our recipes are developed

Easy apple cinnamon baked oatmeal in a baking dish with a golden top and visible baked apple pieces
Photo: FryDaily studio graphic.

Baked oatmeal is what porridge wants to be when it grows up: the same oats and milk, but baked into soft, spoonable squares that hold together on a plate, reheat without turning to glue, and make the whole kitchen smell like an orchard in October. This version is built around apples and a full two teaspoons of cinnamon, sweetened with maple syrup rather than a pile of sugar, so it tastes like breakfast instead of dessert wearing a disguise.

It is a natural partner to our Easy Pumpkin Baked Oatmeal — make one this week and the other next, and the Breakfast rotation takes care of itself. Both were designed for the same job: one dish baked on a quiet afternoon, then a week of mornings where breakfast is a 60-second reheat away and nobody is standing at the stove stirring a pot while half asleep.

Choose apples that hold their shape in the oven — Honeycrisp, Gala, Fuji or Braeburn. Softer eating apples like McIntosh collapse into sauce, which tastes fine but loses the tender chunks that make each bite interesting. Leave the peel on if you like a little texture and color; peel them if you want the apple to disappear into the oats. Either way, dice them small, about 1/2 inch (1.25 cm), so they soften through in the same time the oats need.

Prep15 minutes
Cook35 minutes
Total50 minutes
Servings8 servings
Calories290 kcal

Rolled oats are non-negotiable here

This recipe is engineered for old-fashioned rolled oats, and the type of oat changes everything. Rolled oats drink up the milk slowly and set into distinct, tender flakes. Quick oats absorb liquid almost instantly and bake into a dense, gummy slab; steel-cut oats go the other way and stay hard and chewy long after the eggs have set. If rolled oats are all that is missing from your pantry, this is a recipe worth a store trip — or swap in the pumpkin version's technique with the oats you have and expect a different, denser texture. Save the quick oats for stovetop porridge, where they belong.

The rest is part of the recipe

Baked oatmeal comes out of the oven looking slightly too soft in the middle, and every instinct says to bake it longer. Resist. The oats keep absorbing liquid as the dish stands, and 10 minutes of resting turns that soft center into the custardy, sliceable texture you want. Cut it hot and the squares slump and the slices look ragged; wait the full rest and they lift out cleanly with neat edges. The same patience pays off on day three, when reheated squares still hold together well enough to eat with a fork at your desk.

Ingredients

  • 3 cups old-fashioned rolled oats (270 g)
  • 2 teaspoons ground cinnamon (5 g)
  • 1 teaspoon baking powder (4 g)
  • 1/2 teaspoon kosher salt (3 g)
  • 1/4 teaspoon ground nutmeg (0.5 g)
  • 2 cups whole milk (480 ml)
  • 2 large eggs
  • 1/3 cup maple syrup (80 ml)
  • 3 tablespoons unsalted butter (42 g), melted
  • 2 teaspoons vanilla extract (10 ml)
  • 2 medium apples (about 360 g), diced into 1/2 inch pieces
  • 1/2 cup chopped walnuts (60 g), optional
  • 1 tablespoon brown sugar (12 g), for the top

Amounts are for the yield below. US customary measures first, grams in brackets for scale users.

Step-by-step instructions

  1. Heat the oven and mix the dry ingredients. Heat the oven to 350°F (177°C) and grease a 9 inch (23 cm) square or 11x7 inch (28x18 cm) baking dish. In a large bowl, stir together the oats, cinnamon, baking powder, salt and nutmeg until the spices are evenly distributed through the oats — no pale pockets.
  2. Whisk the wet ingredients. In a second bowl, whisk the milk, eggs, maple syrup, melted butter and vanilla until smooth. Whisking the eggs into the milk first means no streaks of white hiding in the finished bake.
  3. Combine and add the apples. Pour the wet mixture over the oats and stir until every flake is coated. Fold in the diced apples and the walnuts, if using. Let the bowl stand for 5 minutes so the oats begin to absorb the liquid — this head start keeps the bottom layer from baking up thin and watery.
  4. Fill the dish and top. Scrape the mixture into the prepared dish and spread it into an even layer, nudging apple pieces so they are distributed rather than clustered. Sprinkle the brown sugar evenly over the top; it melts into a thin, golden crust as it bakes.
  5. Bake until set at the edges. Bake for 33 to 37 minutes, until the edges are set and pulling slightly away from the dish and the center is mostly set with just a slight jiggle. The top should look dry and lightly golden, and the kitchen will smell unmistakably like cinnamon.
  6. Rest, slice and serve. Rest the dish for 10 minutes so the squares firm up. Cut into 8 portions and serve warm, with a splash of cold milk or a spoonful of yogurt over each square if you like.

Nutrition estimate

NutrientPer serving
Calories290 kcal
Protein8 g
Carbohydrates40 g
Fat11 g
Saturated fat4 g
Sodium240 mg
Fiber5 g
Sugar16 g

Nutrition figures are estimates calculated from standard ingredient data for the yield stated. Your actual values will vary with brands, substitutions and portion sizes — treat them as a guide, not a guarantee.

Storage & reheating

Cool the bake completely, then cover the dish or move squares to an airtight container; it keeps for up to 5 days in the refrigerator. Reheat a square in the microwave for 60 to 90 seconds with a spoonful of milk drizzled over it to restore the just-baked softness, or warm portions in a 325°F (163°C) oven for about 10 minutes. Individual squares freeze well for up to 3 months, wrapped tightly; thaw overnight in the refrigerator or reheat from frozen in the microwave at half power. The assembled, unbaked dish can wait in the refrigerator for up to 12 hours before baking. Nutrition figures are estimates from standard ingredient data and vary with brands and substitutions.

Easy apple cinnamon baked oatmeal in a baking dish with a golden top and visible baked apple pieces

Easy Apple Cinnamon Baked Oatmeal

Recipe by Ahsan ul Haq, FryDaily editor · Published 18 October 2026

Tender apples, warm cinnamon, sliceable squares — a week of fall breakfasts.

Yield: 8 servings  ·  Scale:
Prep15 minutes
Cook35 minutes
Total50 minutes
Servings8 servings
Calories290 kcal

Ingredients

Tick ingredients off as you prep, and tap a step below to mark it done as you cook. Scaling adjusts the listed amounts - seasoning to taste stays your call.

Instructions

  1. Heat the oven and mix the dry ingredients. Heat the oven to 350°F (177°C) and grease a 9 inch (23 cm) square or 11x7 inch (28x18 cm) baking dish. In a large bowl, stir together the oats, cinnamon, baking powder, salt and nutmeg until the spices are evenly distributed through the oats — no pale pockets.
  2. Whisk the wet ingredients. In a second bowl, whisk the milk, eggs, maple syrup, melted butter and vanilla until smooth. Whisking the eggs into the milk first means no streaks of white hiding in the finished bake.
  3. Combine and add the apples. Pour the wet mixture over the oats and stir until every flake is coated. Fold in the diced apples and the walnuts, if using. Let the bowl stand for 5 minutes so the oats begin to absorb the liquid — this head start keeps the bottom layer from baking up thin and watery.
  4. Fill the dish and top. Scrape the mixture into the prepared dish and spread it into an even layer, nudging apple pieces so they are distributed rather than clustered. Sprinkle the brown sugar evenly over the top; it melts into a thin, golden crust as it bakes.
  5. Bake until set at the edges. Bake for 33 to 37 minutes, until the edges are set and pulling slightly away from the dish and the center is mostly set with just a slight jiggle. The top should look dry and lightly golden, and the kitchen will smell unmistakably like cinnamon.
  6. Rest, slice and serve. Rest the dish for 10 minutes so the squares firm up. Cut into 8 portions and serve warm, with a splash of cold milk or a spoonful of yogurt over each square if you like.
Calories: 290 kcalProtein: 8 gCarbohydrates: 40 gFat: 11 gSaturated fat: 4 gSodium: 240 mgFiber: 5 gSugar: 16 g

Recipe by Ahsan ul Haq · FryDaily. Printing? This card is designed to print cleanly on its own.

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Recipe by Ahsan ul Haq

Ahsan ul Haq is the owner and editor of FryDaily. He plans the recipe calendar and writes the site's recipes from classic home-cooking methods and standard references — US measures with grams, honest planning times and a nutrition estimate on every page. More about the author · How our recipes are developed

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Frequently asked questions

Can I make this with steel-cut or quick oats?

Neither is a straight swap. Quick oats absorb the liquid too fast and bake into a dense, gummy texture; steel-cut oats stay hard in the time the eggs need to set. If steel-cut is what you have, cook them halfway on the stove first, drain well, and expect a chewier bake. Rolled oats really are the right tool for this recipe, and they keep for months in the pantry once you have them.

How do I make it dairy-free?

Swap the milk for the same amount of oat milk or almond milk, and the butter for melted coconut oil or a neutral oil. The texture stays very close; oat milk keeps it creamiest. Check your oats are certified gluten-free at the same time if that matters for your table — oats are naturally gluten-free but are often processed alongside wheat.

Can I reduce the sweetness?

Yes. The maple syrup can drop to 1/4 cup (60 ml) without hurting the structure, especially with sweet apple varieties like Fuji or Gala. Below that the bake starts to taste like plain porridge, which some people genuinely prefer with a drizzle of honey at the table instead. The brown sugar on top is optional and can be skipped entirely.

What other fruit works instead of apples?

Pears are the closest swap — same dice, same timing. A mix of apple and 1 cup of fresh or frozen blueberries (150 g) is excellent in late summer, and diced peaches work when they are firm and not overripe. Frozen fruit can go in still frozen; add 3 to 4 minutes to the bake time and expect a little extra juice in the dish.

Can I bake this in muffin cups for grab-and-go portions?

Yes, and it is a good idea for packed breakfasts. Divide the mixture between 12 greased muffin cups, filling them to the top, and bake at 350°F (177°C) for 22 to 25 minutes, until set. Cool in the pan for 10 minutes before turning them out. The cups keep and freeze exactly like the squares, and the edges get a little more of the golden crust.