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Cinnamon and apple are a perfect pair, and when you combine them with warm, creamy oatmeal, well — you won’t be able to stop eating this cinnamon apple baked oatmeal! Plus, the streusel-like topping takes it to a whole new level! |

Cinnamon Apple Baked Oatmeal

  • Author: Sam | Ahead of Thyme
  • Total Time: 45 minutes
  • Yield: 6-8 servings
  • Diet: Vegetarian


Quick and easy cinnamon apple baked oatmeal topped with a crumbled streusel-like topping is the best fall make-ahead breakfast. Prep it in 10 minutes.



  • 1 tablespoon butter (or butter spray)
  • 2 gala apples, peeled and cut into ½-inch cubes 
  • 1 teaspoon cinnamon 
  • 1 cup quick oats 
  • 1/3 cup walnuts, crushed
  • 1/4 teaspoon salt
  • 1/4 cup brown sugar
  • 1 + 1/2 cups milk
  • 1 egg

Streusel Topping:

  • 1/2 cup all-purpose flour
  • 1/4 cup + 2 tablespoons brown sugardivided
  • 1/4 teaspoon salt
  • 4 tablespoons butter, at room temperature, cut into cubes


  1. Preheat oven to 350 F. Grease a 2-quart oval casserole dish or ramekin with butter or butter spray, then add apples. Toss with cinnamon and bake for 15-20 minutes, or until softened. 
  2. Remove the dish from the oven and add oats, walnuts, and salt. Stir until evenly dispersed. 
  3. In a separate bowl, whisk together brown sugar, milk, and egg. Pour on top of oats, making sure everything is submerged in liquid.
  4. To make streusel topping, combine flour, 1/4 cup brown sugar, salt, and butter in a small bowl. Use your hands to gently work the ingredients together, crumbling the butter into pea-sized pieces and working quickly so that it doesn’t melt. Sprinkle as much of the streusel as you’d like on top of the oatmeal, then bake for 20-25 minutes, or until most of the liquid as been absorbed.
  5. Sprinkle the remaining 2 tablespoons brown sugar on top, then place under the broiler for just a couple minutes until the sugar has melted. Watch carefully so it doesn’t burn. Serve hot as is or with a splash of milk.


How to make it creamier: I like this oatmeal as is, but if you prefer a creamier oatmeal, just serve it with a splash of milk right after plating.

How to serve: Serve with yogurt, a drizzle of maple syrup and extra walnuts crushed on top.

How to store: Allow oatmeal to cool completely, then cover and store in the refrigerator for up to 1 week. You can also scoop it into individual portions and store in airtight containers or freezer bags in the freezer for up to 3 months.

  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Category: Breakfast
  • Method: Bake
  • Cuisine: American

Keywords: cinnamon apple baked oatmeal, baked oatmeal with apple, fall baked oatmeal, apple oatmeal