Apple Cinnamon Baked Oatmeal for Meal Prep (Make-Ahead Breakfast)

Apple cinnamon baked oatmeal is a cozy, sliceable breakfast that turns pantry oats, fresh apples, and warm spice into a make-ahead dish. This editorial guide follows established baked-oatmeal techniques; our exact variation has not been independently kitchen-tested.

Editorial transparency: The cited source is a kitchen-tested recipe or established method. The adapted version below is original editorial content and has not been independently tested by Nutrients Recipes.

Why This Recipe Works

The method uses familiar American grocery ingredients, clearly stated cooking temperatures, and practical make-ahead tips. Check doneness rather than relying only on the clock.

Recipe at a Glance

9 servings | Prep: 15 minutes | Bake: approximately 40–50 minutes | Oven: 350°F

Ingredients

2 cups old-fashioned rolled oats
1½ teaspoons ground cinnamon
1 teaspoon baking powder
¼ teaspoon fine salt
2 large eggs
1¾ cups milk
⅓ cup maple syrup
2 tablespoons melted unsalted butter
1 teaspoon vanilla extract
2 medium apples, cored and diced (about 2 cups)
½ cup chopped walnuts, optional

Step-by-Step Instructions

Preheat oven to 350°F and lightly grease an 8-inch square baking dish.
Whisk oats, cinnamon, baking powder and salt in a large bowl.
In a second bowl, whisk eggs, milk, maple syrup, melted butter and vanilla.
Combine wet and dry ingredients; fold in diced apples and walnuts. Pour into the prepared dish and spread evenly.
Bake about 40–50 minutes until the center is set and the top is lightly golden. Rest 10 minutes before cutting into nine squares.

Helpful Tips, Substitutions, and Storage

Old-fashioned rolled oats give a pleasantly chewy texture; instant oats may become mushy.
For a nut-free version, omit walnuts and check other ingredients for cross-contact.
Store promptly in airtight containers in the refrigerator for up to 3–4 days; reheat until hot. Freeze individually wrapped portions for longer storage.
Serve with plain Greek yogurt or a little warm milk; nutritional values depend on your chosen brands.

Frequently Asked Questions

Can I assemble it the night before?

Yes, refrigerate the covered mixture and bake the next morning; expect a slightly softer texture as the oats absorb milk.

Can I use steel-cut oats?

Not as a direct substitution. They require different liquid and baking times.

Related Recipes

For another option, try our cranberry orange overnight oats.

Recipe Development Reference

For an independently tested foundation and additional technique guidance, see King Arthur Baking’s apple cinnamon baked oatmeal. This article is a distinct editorial adaptation, not a claim that Nutrients Recipes has tested the exact variation.