Simple Blueberry Baked Oatmeal Recipe
This Blueberry Baked Oatmeal recipe combines simple ingredients for a healthy and delicious start to your day. Made with old-fashioned rolled oats, sweet maple syrup, fresh blueberries, and cinnamon, it’s the perfect baked oatmeal recipe for busy mornings, meal prep, or a cozy weekend brunch.
I’ve been making versions of this healthy blueberry baked oatmeal for years, especially during the back-to-school season or when I want a bake ahead breakfast casserole that is nourishing, and doesn’t skimp on flavor. It’s naturally sweetened, easily customizable, and comes together with simple pantry staples. Bonus is that it reheats beautifully, so it’s ideal for meal prep, breakfasts, or grabbing a quick slice on your way out the door.
Table of Contents
Why You’ll Love This Recipe
- Super Customizable – use almond milk, oat milk for a dairy free options. Fold in extra ingredients like diced peaches or try this baked blueberry and banana oatmeal variation. Use sugar-free maple syrup sweetener or no sweetener at all.
- Nutritious – Oats are high in soluble fiber (Healthline), and can lower blood sugar and cholesterol levels. Blueberries are considered a superfood, bursting with nutrients that are classified as antioxidants and phytochemical (Mayo Clinic Health Systems).
- Make in advance – Serving guests? You can assemble baked oatmeal in advance, and bake right before you want to serve it for a no-fuss easy breakfast or brunch entree. Perfect dish for a meal prep when you want breakfast prepared in advance.
Ingredients
Here are the ingredients that you will need. I bet most of these are already stocked in your kitchen. You can find the full list of the ingredients and amounts needed in the recipe card at the bottom of this post.
Ingredient breakdown
- Old-fashioned rolled oats– the base of the bake. Rolled oats provide structure and texture, holding everything together while keeping it soft and chewy.
- Baking powder– gives the dish a gentle lift, preventing it from being too dense or heavy. It helps the ingredients rise slightly while baking.
- Ground cinnamon– adds cozy warmth and flavor that pairs well with blueberries and oats. It also enhances the natural sweetness of the fruit and syrup.
- Salt– a small amount of salt balances the sweetness and enhances all the flavors. Milk-hydrates the oats and gives the bake a soft, pudding-like texture.
- Eggs– act as a binder to hold everything together once baked. Eggs also provide protein to the bake.
- Maple syrup– A natural sweetener that adds depth and a hint of caramel flavor. The amount can be adjusted based on your desired sweetness.
- Vanilla extract– adds aromatic sweetness and enhances the flavor of the other ingredients.
- Melted butter– adds richness and a hint of indulgence to the texture. It also helps the top brown slightly.
- Fresh blueberries– The star ingredient! Blueberries add bursts of juicy sweetness, antioxidants, and beautiful color.
- Chopped walnuts (optional)- Adds a little bit of crunch, healthy fats, and a nutty flavor.
How To Make This Baked Blueberry Oatmeal Recipe
- Whisk together dry ingredients: oats, cinnamon, baking powder, and salt. Set aside.
2. In a separate mixing bowl, combine the milk, eggs, vanilla extract, and maple syrup.
3. Combine the wet and dry ingredients. Mix until well incorporated.
4. Fold in the blueberries and nuts (optional).
- Pour into a lightly greased oven-proof baking dish.
- Bake at 375°F for 35-40 minutes or until the middle is set and the top is lightly browned.
Substitutions and Additions
- Turn this into baked oatmeal cups or muffins. Scoop the mixture into a greased or lined muffin tin. Bake at 350°F for 25-30 minutes, or until set and lightly golden on top of the muffins.
- Nuts can be modified to what you have on hand. I also like to use pecans for this dish. You can lightly toast your nuts to enhance the flavor and to crisp up the crunchy texture.
- Add other fruits for a different flavor profile. Diced apples tastes delicious when baked with cinnamon. You can also mix several fruits together like blackberries and diced peaches.
- Sugar-free maple syrup is an option for those that limit sugars. You can also leave the maple syrup out all together. For an extra delicious topping, try this blueberry Sauce.
- Extra Protein can be used in this recipe by adding a scoop of your favorite plain or vanilla protein powder. You will need to lower the oven temperature to 325°F. Or top your slice with Greek yogurt – yum!
How To Store
Store leftovers in an airtight container in the refrigerator for up to 5 days.
Freeze blueberry oatmeal bake by slicing into individual squares and put in an airtight container for up to 2 months. Thaw overnight in the fridge or reheat from frozen.
Sandra’s Pro Tips
- Use the best blueberries you can find. My favorite to use in this recipe is fresh blueberries. You can’t beat the taste and texture of fresh berries.
- Make sure you grease the pan. You want to make sure the bake doesn’t stick to the pan when you are trying to serve it.
- Don’t be scared to customize it if you want. If you are out of walnuts but have pecans, substitute them in. Want the dish a little sweeter to please the kids? Add chocolate chips. I have even added shredded zucchini or a mashed banana when I needed to use them up.
- Let it rest before slicing. If you let it set for a few minutes, it will firm up nicely and be easier to cut. It is also great to slice up for meal prep for the week.
FAQ’s
Do you have questions about this blueberry baked oatmeal recipe? Here are the answers to the most commonly asked questions for this recipe.
For this recipe, steel-cut oats require more liquid and a longer cook time. It is best to stay with old-fashioned rolled oats for the best results.
Yes! Bake it, and cool completely, and store it in the fridge for up to 5 days. Just reheat a slice in the microwave with a splash of milk.
Of course! Frozen blueberries work great, and you don’t need to thaw them first. You will want to toss them in a little bit of flour to prevent them from sinking into the blueberry bake.
It’s soft and chewy, similar to oatmeal. It is a cross between traditional oatmeal and a soft granola bar. If you let it cool fully, the slices hold together well, but it’s still moist and tender.
Other Delicious Recipes with Blueberries To Try
- Blueberry French Toast Casserole
- Easy Blueberry Oatmeal Bars
- No-Bake Blueberry Cream Cheese Pie
- Blueberry Coffee Cake
Simple Baked Blueberry Oatmeal Recipe
Equipment
- baking dish square, 8×8-inch or 9×9-inch oven proof
- Mixing bowls
- whisk
Ingredients
- 2 cups old-fashioned rolled oats
- 2 teaspoons baking powder
- 1 1/2 teaspoons ground cinnamon
- 1/4 teaspoon salt
- 2 cups milk
- 2 large eggs
- 1/4 cup maple syrup or honey. Use sugar free for lower carb option
- 1 teaspoon vanilla extract
- 2 tablespoons melted butter
- 1 1/2 cups fresh blueberries
- 1/2 cup chopped walnuts
Instructions
- Preheat your oven to 375°F (190°C). Grease an 8×8-inch or similar-sized baking dish.
- In a large bowl, stir together the oats, baking powder, cinnamon, and salt. Set it aside.
- In another bowl, whisk the milk, eggs, maple syrup, vanilla extract, and melted butter until smooth.
- Pour the wet mixture into the bowl with the oats. Stir to combine, then gently fold in the blueberries and nuts (optional).
- Pour the mixture into your greased baking dish. Bake for 35-40 minutes, or until the top is golden and the center is set.
- Let it rest for 5-10 minutes before slicing. Serve warm as-is, or top with extra berries, or even a drizzle of maple syrup.
Notes
Nutrition
Disclaimer
Please note that the nutritional information provided are guidelines and may vary based on the brand of products used. For your specific nutritional goals use My Fitness Pal or Verywell Fit recipe calculators. All content within this site is not intended as medical diagnosis or treatment and should not be considered a substitute for professional medical expertise.
