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Apple Cinnamon Baked Oatmeal with Streusel Topping

A square slice of apple baked oatmeal topped with a thick cinnamon streusel topping, served on a white plate.
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Make this comforting Apple Cinnamon Baked Oatmeal for an easy, make-ahead breakfast casserole topped with a simple streusel.

Ingredients

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  • 2 cups rolled oats
  • 1 teaspoon baking powder
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon salt
  • 1/4 cup packed brown sugar
  • 1 large egg, lightly beaten
  • 1 1/2 cups milk (dairy or non-dairy)
  • 1/4 cup melted butter or coconut oil
  • 1 teaspoon vanilla extract
  • 2 medium apples, peeled and diced
  • 1/4 cup chopped pecans (optional, for topping)
  • 2 tablespoons brown sugar (for topping)
  • 2 tablespoons all-purpose flour (for topping)
  • 1 tablespoon cold butter (for topping)

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease an 8×8 inch baking dish.
  2. In a large bowl, mix the rolled oats, baking powder, cinnamon, and salt.
  3. In a separate bowl, whisk together the brown sugar, egg, milk, melted butter, and vanilla extract.
  4. Pour the wet ingredients into the dry ingredients and stir until just combined. Fold in the diced apples.
  5. Pour the mixture into the prepared baking dish.
  6. Prepare the streusel topping: In a small bowl, combine the 1/4 cup brown sugar, flour, and pecans. Cut in the 1 tablespoon cold butter using a fork or your fingers until the mixture resembles coarse crumbs.
  7. Sprinkle the streusel topping evenly over the oatmeal mixture.
  8. Bake for 35 to 40 minutes, or until the top is golden brown and the center is set.
  9. Let the baked oatmeal cool for 5 minutes before cutting into squares and serving warm.

Notes

  • You can prepare this dish the night before; cover it and refrigerate. Add 5 to 10 minutes to the baking time if baking directly from the refrigerator.
  • This recipe freezes well. Cut into individual portions, wrap tightly, and freeze for up to three months. Reheat in the microwave or oven.
  • Use firm apples like Honeycrisp or Granny Smith for the best texture after baking.

Nutrition

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