Apple Cinnamon Baked Oatmeal Makes Six Ready-to-Reheat Breakfasts

Apple cinnamon baked oatmeal with six portions in a baking dish
Tender apple pieces, chewy rolled oats and cinnamon bake into six lightly maple-sweetened breakfast portions.
Apple cinnamon baked oatmeal recipe

A weekday breakfast should not require a saucepan, a timer, and a negotiation with a half-empty cereal box. Apple cinnamon baked oatmeal moves the oats into the oven, where they turn into tender, lightly sweet squares with golden edges and little pockets of apple. It is spoonable when warm and firmer after chilling, so you can choose a bowl or a plate.

This apple cinnamon baked oatmeal makes six portions in an 8-inch square dish. Old-fashioned rolled oats keep their texture, diced apples soften as they bake, and a modest pour of maple syrup sweetens the whole pan. Bake until the center is set, then let it rest before cutting.

I prefer keeping the apple peel for its color and texture; peeling is fine if that suits you better. Chop the fruit small enough to soften alongside the oats. The full measurements and method are in the recipe card below.

Apple cinnamon baked oatmeal square with tender apple pieces

Serving Suggestions for Apple Cinnamon Baked Oatmeal

Serve a warm square with a splash of milk around the edges, or add plain yogurt for a cool contrast. The oatmeal already has maple syrup, so taste before adding more. I would start with the simplest topping: it lets the cinnamon and apple do the talking, and there is less washing up.

  • For a softer breakfast bowl, break up a warm portion and add milk a little at a time.
  • For a plate-friendly square, allow the pan to rest for 10 minutes before lifting out a portion.
  • For a fuller breakfast, pair it with plain yogurt or an egg rather than assuming one portion suits every appetite.

For make-ahead servings, divide the cooled oatmeal into shallow containers and refrigerate promptly. Follow the USDA guidance for leftovers: chill within two hours, or one hour above 90°F, and reheat leftovers to 165°F. Keep the refrigerator at 40°F or below.

PlanStorageServing tip
Next few morningsRefrigerate 3–4 daysCover and reheat to 165°F
Save for laterFreeze individual portionsThaw in the refrigerator before reheating
Serve todayRefrigerate extras promptlyRest 10 minutes for neater squares
A practical serving and storage guide for the baked oatmeal.

Plan for six portions, then freeze any you will not eat within the refrigerated storage window. A little milk helps a reheated serving feel soft again.

Apple cinnamon baked oatmeal cut into six servings

Variations That Keep the Oatmeal Tender

The most useful changes preserve the balance between oats, liquid, and fruit. Old-fashioned rolled oats are the starting point here. Steel-cut oats need a different cooking approach, and instant oats can make the texture much softer. Avoid swapping either into the pan and expecting the same result.

For a dessert with a crisp apple-and-oat finish, try the apple crumble recipe. Its separate topping gives a different texture from this soft, set breakfast base.

  • Apple choice: choose a firm apple you enjoy eating, such as Gala, Honeycrisp, or a tart Granny Smith. Tart fruit makes the maple sweetness less prominent.
  • Milk choice: use the same volume of unsweetened dairy-free milk if preferred. Flavor, protein, and richness depend on the product.
  • Spice choice: replace a small part of the cinnamon with ground ginger for a sharper note. Keep cinnamon as the main flavor.
  • Texture choice: serve chopped nuts at the table if desired, instead of adding them to the base recipe. They are optional extras and change the nutrition.

Keep the oat type and liquid quantity steady when trying a variation. Change one flavor at a time so the apple stays the focus.

Health Benefits and Everyday Balance

Rolled oats are a whole-grain ingredient, and the apples contribute fruit and fiber. MyPlate’s grain guidance explains why whole grains are a useful part of a varied eating pattern. This is a practical breakfast option, without needing a sweeping health promise attached to every oat.

Milk and eggs contribute protein, while maple syrup adds sugar as well as flavor. Maple syrup still counts as added sugar; its name does not give it a free pass. The recipe card provides an estimated nutrition calculation for one-sixth of the pan, before yogurt, extra syrup, or nuts. Actual values vary with the products and portions you use.

Choose toppings to suit your appetite and preferences. Whole grains, fruit, and some protein offer a useful starting point; the overall meal matters more than a single ingredient.

Apple cinnamon baked oatmeal showing moist oat texture

Bottom Line

Apple cinnamon baked oatmeal is a comfortable way to turn everyday oats into six ready-to-reheat breakfasts. Keep the apples small, use rolled oats, and let the center set before serving. I would save the extra syrup for the table and enjoy the contrast between tender apples, chewy oats, and those lightly golden edges.

Apple Cinnamon Baked Oatmeal Recipe

Emily Parker
Apple cinnamon baked oatmeal recipe
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Tender apple pieces, chewy rolled oats and cinnamon bake into six lightly maple-sweetened breakfast portions.
Estimated Recipe CostEstimated USD $4.60 for the whole recipe; about $0.77 per serving (6 servings). Optional toppings excluded; local prices vary.
Prep Time 15 minutes
Cook Time 40 minutes
Resting Time 10 minutes
Total Time 1 hour 5 minutes
Servings: 6 portions
Course: Breakfast
Cuisine: American
Calories: 336

Ingredients
  

Oatmeal
  • 3 cups old-fashioned rolled oats 240 g; not steel-cut or instant
  • 2 cups 2% milk 480 ml
  • 2 large eggs
  • 2 medium apples 300 g prepared, cored and cut into 1/4-inch dice; peel optional
  • 0.333333333 cup pure maple syrup 80 ml / 107 g
  • 2 tbsp unsalted butter 28 g, melted and cooled slightly
  • 1 tsp unsalted butter 5 g, for greasing the dish
  • 2 tsp ground cinnamon
  • 1 tsp baking powder
  • 1 tsp vanilla extract
  • 0.25 tsp fine salt

Equipment

  • 8-inch square baking dish
  • Large mixing bowl
  • Whisk
  • Measuring cups and spoons
  • Cutting board and knife
  • Pastry brush
  • Spatula

Instructions
 

Bake the oatmeal
  1. Preheat the oven to 350°F (175°C). Brush an 8-inch square baking dish with the 1 teaspoon butter.
  2. In a large bowl, whisk the milk, eggs, maple syrup, melted butter and vanilla until evenly combined.
  3. Stir in the rolled oats, cinnamon, baking powder and salt. Fold in the diced apples, then transfer the mixture to the prepared dish and spread evenly.
  4. Bake for 35–45 minutes, checking at 35 minutes, until the edges are golden and the center is set without loose liquid. Ovens and baking dishes vary; use the set center rather than the clock alone.
  5. Let rest for 10 minutes, then divide into 6 portions. Serve warm, with optional milk or plain yogurt at the table.

Nutrition

Calories: 336kcalCarbohydrates: 50gProtein: 12gFat: 11gFiber: 6g

Video

Notes

Nutrition is estimated per one-sixth of the pan from generic USDA ingredient values; optional milk, yogurt, nuts and extra syrup for serving are excluded. Use rolled oats for the intended texture. Refrigerate promptly within 2 hours (1 hour above 90°F), keep at 40°F or below, use within 3–4 days and reheat leftovers to 165°F.
Video credit: The Real Food Dietitians, Apple Cinnamon Baked Oatmeal, originally uploaded April 9, 2025. Their version includes walnuts; this recipe leaves nuts out of the base mixture.

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