Easy Blueberry Baked Oatmeal is a cozy make-ahead breakfast made with oats, juicy blueberries, sliced almonds, applesauce, and eggs. It’s lightly sweetened, easy to customize, and perfect for meal prep or busy mornings.
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Originally published in February 2022 and updated in May 2026 with clearer instructions and fresh new photos.
A Cozy Make-Ahead Breakfast
We eat a lot of oats at our house, especially baked oatmeal. It’s filling, budget-friendly, and easy to switch up with different fruit, nuts, and spices depending on what we have on hand. My Chocolate Chip Baked Oats are another favorite when we want something a little sweeter.
This version combines blueberries and almonds for a simple breakfast that feels hearty without being too heavy. The oats bake up soft and tender, while the almonds add a little crunch and the blueberries bring natural sweetness to every bite.
One of my favorite things about baked oatmeal is that it reheats well, so I can make it once and have breakfast ready for several days. It’s great warm right out of the oven, but I also like it cold straight from the refrigerator.
If you’re new to baked oatmeal, think of it somewhere between oatmeal and a soft breakfast casserole. It’s easy to make and very forgiving.
Ingredients
Ingredient Swap Ideas
This recipe is easy to customize with different fruit, nuts, and milk.
- Fresh or frozen blueberries can be used in this recipe. You can also swap the blueberries for raspberries, strawberries, peaches, cherries, or mixed berries.
- Pecans or walnuts work well in place of almonds.
- Quick oats give the best cake-like texture, but old-fashioned oats can also be used.
- Use whatever milk you normally keep on hand, including dairy milk, almond milk, oat milk, or soy milk.
- Maple syrup adds great flavor, but honey or brown sugar can also be used.
What the Batter Should Look Like
The mixture will be loose and wet before baking.
Top with extra blueberries and sliced almonds before baking.
Tips for the Best Baked Oatmeal
- Let the oatmeal rest for a few minutes before slicing and serving.
- Frozen blueberries can be used straight from the freezer.
- For extra texture, sprinkle a few additional almonds over the top before baking.
- This recipe reheats well in the microwave for quick breakfasts throughout the week.
Storage and Reheating
How to Store Baked Oatmeal
- Room Temperature: Store leftover baked oatmeal covered in an airtight container on the counter for up to 2 days.
- Refrigerator: Keep it covered in the fridge for up to 4 to 5 days.
- Freezer: Cut into individual portions, wrap tightly, and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.
How to Reheat Baked Oatmeal
Oven: Place leftovers in an oven-safe dish, cover with foil to prevent drying out, and bake at 350°F for 10 to 15 minutes until heated through.
Microwave: Place a single slice on a microwave-safe plate. Splash with a teaspoon of milk or water to keep it moist, and microwave on high for 45 to 60 seconds until warm. You can also reheat straight from frozen for about 90 seconds.
More Oatmeal Breakfast Recipes
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Easy Blueberry Baked Oatmeal Recipe
Ingredients
- 2 ½ cups quick cooking oats
- ½ cup sliced almonds plus additional
- 2 teaspoons cinnamon
- 1 teaspoon baking powder
- ¼ teaspoon salt
- 2 cups milk
- 2 eggs
- ¼ cup maple syrup + additional for drizzling not pancake syrup
- ¼ cup unsweetened applesauce
- 1 teaspoon vanilla
- 1 ½ cups fresh blueberries divided
Instructions
- Preheat oven to 350°. Spray an 8" X 8" pan with cooking spray.
- In a large bowl combine oats, almonds, cinnamon, baking soda and salt. Add milk, eggs, ¼ cup maple syrup, applesauce, and vanilla and mix until combined. Stir in 1 cup blueberries. Top with remaining blueberries and a tablespoon or two almonds.
- Bake 40-45 minutes or until edges begin to brown and a toothpick inserted into the center comes out clean.
- Cool slightly before serving. Drizzle with additional maple syrup, if desired.
Notes
Nutrition
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Recipe adapted from eatwell101.com.
About Mindy
Mindy has been cooking for over 30 years, starting as a young mother who learned how to create delicious meals on a budget. Today, she shares approachable recipes made with everyday ingredients that are easy, affordable, and family-friendly. Her goal is to show that great food doesn’t need to be complicated or expensive.