Name: Apple Streusel Baked Oatmeal
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 2 cups old-fashioned oats; 1/4 cup brown sugar; 1 tsp baking powder; 1 tsp ground cinnamon; 1/4 tsp salt; 1/4 tsp ground nutmeg; 1/8 tsp ground allspice; 1 3/4 cups milk; 1/4 cup maple syrup; 1 large egg; 2 tbsp canola oil (or other neutral oil); 1 tsp vanilla extract; 1 1/2 cups peeled, chopped apple (about 1 large apple); 1/4 cup old-fashioned oats (for streusel); 2 tbsp brown sugar (for streusel); 1 tbsp flour (for streusel); 1/4 tsp ground cinnamon (for streusel); 1 tbsp butter, melted (for streusel)

Why You’ll Love Apple Streusel Baked Oatmeal Recipe

This baked oatmeal combines classic apple and spice flavors with a crunchy streusel topping, giving you comforting texture and sweetness in every bite. It’s perfect for busy mornings or weekend brunches and makes enough to enjoy throughout the week.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

For the oatmeal
2 1/2 cups rolled oats
1/4 cup brown sugar
2 teaspoons cinnamon
1 1/2 teaspoons baking powder
1/2 teaspoon salt
1/2 teaspoon nutmeg
1/4 teaspoon allspice
1 1/2 cups milk of your choice
1/2 cup unsweetened applesauce
1/2 cup plain Greek or regular yogurt
1/3 cup pure maple syrup or honey
1 teaspoon vanilla extract
2 eggs
2 cups chopped apple

For the topping
2/3 cup white whole wheat flour (all-purpose or whole wheat flour would also work)
1/2 cup rolled oats
1/2 cup brown sugar
1/4 cup chopped pecans, optional
2 teaspoons cinnamon
1/4 teaspoon nutmeg
1/4 teaspoon salt
5 tablespoons butter, cold and cut into pieces

Directions

Preheat your oven to 350°F (175°C). Lightly spray a 9×9 inch baking dish with non-stick cooking spray.
In a large bowl, whisk together the oats, brown sugar, cinnamon, baking powder, salt, nutmeg, and allspice until evenly combined.
In a medium bowl, whisk together the milk, applesauce, yogurt, maple syrup or honey, vanilla extract, and eggs until smooth.
Add the wet ingredients to the dry ingredients and stir until combined. Fold in the chopped apples.
Pour the oatmeal mixture into the prepared baking dish and spread evenly.
In a separate bowl, mix the flour, oats, brown sugar, cinnamon, nutmeg, and salt. Cut in the cold butter until the mixture resembles coarse crumbs.
Sprinkle the streusel topping evenly over the oatmeal.
Bake for 40–50 minutes, or until a toothpick inserted in the center comes out mostly clean.
Let cool slightly before slicing and serving.

Servings and timing

Makes about 9 servings
Prep time: 15 minutes
Bake time: 40–50 minutes
Total time: 55 minutes

Variations

• Add 1/2 cup chopped pecans or walnuts to the streusel for extra crunch.
• Swap honey for maple syrup in the oatmeal for a different sweet note.
• Use different apple varieties like Granny Smith, Honeycrisp, or SweeTango to adjust the sweetness and texture.
• Stir in a teaspoon of maple extract to deepen the maple flavor.

Storage/Reheating

Store leftovers in an airtight container in the refrigerator for up to 4–5 days.
To reheat, warm individual portions in the microwave or oven until heated through. A splash of milk can help restore moisture.
You can also freeze portions for up to 2 months. Thaw overnight in the refrigerator before reheating.

FAQs

What type of oats should I use?

Use rolled oats (old-fashioned). They provide the best texture and hold up well during baking.

Can I make this vegan?

Yes. Use plant-based milk, dairy-free yogurt, and flax eggs or another egg substitute.

Can I prepare it ahead of time?

Absolutely. You can assemble the oatmeal the night before, refrigerate it, and bake it fresh in the morning. Add the streusel right before baking.

What apples are best for this recipe?

Granny Smith, Honeycrisp, or any firm, crisp apple that won’t turn mushy when baked.

Can I reduce the sugar?

Yes. Reduce the brown sugar and maple syrup slightly to lower the overall sweetness while still keeping good flavor.

Is this recipe freezer-friendly?

Yes. Once baked and cooled, cut it into individual portions and freeze. Thaw overnight and reheat before serving.

How do I reheat leftovers?

Reheat in the microwave or in a 350°F oven until warmed through. Add a splash of milk if needed.

Can I add nuts inside the oatmeal?

Yes. Feel free to mix chopped nuts into the oatmeal base for extra texture and flavor.

Can I use quick oats?

Quick oats are not ideal, as they can create a mushier texture. Stick with rolled oats for best results.

Can I serve it with toppings?

Definitely. Try adding a drizzle of maple syrup, a spoonful of yogurt, or fresh fruit for an extra special touch.

Conclusion

Apple Streusel Baked Oatmeal is a cozy and satisfying breakfast that brings together the flavors of fall with the ease of a make-ahead meal. With tender apples, warm spices, and a crunchy streusel topping, this dish is a perfect way to start any day — whether you’re meal prepping for the week or treating yourself to a weekend brunch.