
Baked Oatmeal: a cozy home-cooked favorite with big flavor, practical prep, and servings worth fighting over—in a friendly way.
The Cozy Pan of Baked Oats Your Weeknights Have Been Missing
A lightly sweet, cinnamon-scented baked oatmeal studded with apple and walnuts — comforting enough for slow weekends, practical enough for weekday meal prep.
Baked oatmeal is the answer when you want comforting, homey breakfast flavor without hovering over the stove. This version turns rolled oats into a tender, slightly custardy square with crisp, buttery edges and big pockets of warm apple — the kind of thing that smells like cinnamon and makes the whole house feel ready for the day. It’s straightforward to assemble and holds its shape so you can slice it like a cake. Everyone gets a square (unless someone gets greedy).
The ingredient list reads like breakfast shorthand: rolled oats for chew, a pinch of baking powder for lift, brown sugar and maple syrup for caramel warmth, and a cheeky sprinkle of cinnamon for spice. An egg, a splash of milk and melted butter bind everything into a creamy set once baked. Grating or finely chopping the apple keeps the bake moist and distributed throughout, while roughly chopped walnuts add that toasty crunch that contrasts the soft center.
Practical perks: everything comes together in one bowl — dry ingredients whisked, wet ingredients whisked, then folded together with apple and walnuts — and it bakes until golden and set (375°F for about 40 minutes). Grease an 8×8 pan or line it with parchment for easy lifting. Serve warm with a dollop of yogurt, a drizzle of extra maple, or a splash of milk. Cut into four generous squares to feed a family, or cut smaller for packed lunches.
This is the kind of make-ahead win that keeps mornings calm: cool completely, wrap slices, and refrigerate for easy breakfasts all week or freeze individual portions for future mornings. It’s cozy, forgiving, and reliably crowd-pleasing — the kind of traybake that invites friendly disputes over the last piece.
Ingredients
How to Make Baked Oatmeal
- Preheat the oven to 375°F (190°C) and grease an 8x8-inch (20x20 cm) baking dish with a little butter or line it with parchment.
- In a large bowl, whisk together the rolled oats, baking powder, ground cinnamon, salt, and brown sugar until evenly mixed.
- In a separate bowl, whisk the egg with milk, melted butter, maple syrup, and vanilla until smooth.
- Peel and grate or finely chop the apple and roughly chop the walnuts; fold them into the wet mixture.
- Pour the wet ingredients into the dry oats and stir until everything is combined and the oats are evenly moistened.
- Transfer the mixture to the prepared baking dish, smoothing the top with a spatula, and scatter a few extra walnut pieces on top if desired.
- Bake for 35–40 minutes, or until the top is golden and the center is set—insert a toothpick into the middle; it should come out mostly clean with a few moist crumbs.
- Let the baked oatmeal cool for 10–15 minutes to firm up before slicing into 4 squares; refrigerate leftovers in an airtight container for up to 4 days and reheat individual portions in the microwave for 45–60 seconds.
Recipe Card
Baked Oatmeal
Baked Oatmeal: a cozy home-cooked favorite with big flavor, practical prep, and servings worth fighting over—in a friendly way.

- Prep
- 15 min
- Cook
- 40 min
- Servings
- 4
Ingredients
Instructions
- Preheat the oven to 375°F (190°C) and grease an 8x8-inch (20x20 cm) baking dish with a little butter or line it with parchment.
- In a large bowl, whisk together the rolled oats, baking powder, ground cinnamon, salt, and brown sugar until evenly mixed.
- In a separate bowl, whisk the egg with milk, melted butter, maple syrup, and vanilla until smooth.
- Peel and grate or finely chop the apple and roughly chop the walnuts; fold them into the wet mixture.
- Pour the wet ingredients into the dry oats and stir until everything is combined and the oats are evenly moistened.
- Transfer the mixture to the prepared baking dish, smoothing the top with a spatula, and scatter a few extra walnut pieces on top if desired.
- Bake for 35–40 minutes, or until the top is golden and the center is set—insert a toothpick into the middle; it should come out mostly clean with a few moist crumbs.
- Let the baked oatmeal cool for 10–15 minutes to firm up before slicing into 4 squares; refrigerate leftovers in an airtight container for up to 4 days and reheat individual portions in the microwave for 45–60 seconds.
Nutrition
- Carbohydrates
- 61
- Saturated Fat
- 7
- Sodium
- 450
- Fiber
- 6.5
- Unsaturated Fat
- 13
- Protein
- 12
- Fat
- 20
- Cholesterol
- 78
- Trans Fat
- 0.2
- Calories
- 470
- Sugar
- 29