Name: Easy Blueberry Oatmeal Bake Recipe for Cozy Fall Mornings
Prep time: 10 min
Cook time: 35 min
Total time: 8 h 45 min
Cuisine: American
Ingredients: 2 cups old fashioned oats (use gluten free if necessary); 3/4 cup milk (unsweetened almond milk recommended); 1 cup unsweetened applesauce; 1/4 cup chopped walnuts (optional); 1/2 cup egg whites (about 3 large eggs); 3 tablespoons Stevia blend (such as Gentle Sweet); 2 teaspoons pure vanilla extract; 1.5 teaspoons cinnamon; 1/2 teaspoon baking powder; 1/4 teaspoon salt; 2 cups blueberries (fresh or frozen)

Jump to Recipe

If you’re on the hunt for a wholesome, cozy breakfast that feels both indulgent and nourishing, this Blueberry Oatmeal Bake is about to become your new go-to. Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it, and you’ll see just how simple ingredients come together to create a warm, comforting dish bursting with juicy blueberries, tender oats, and a hint of cinnamon sweetness. It’s the perfect way to start your day feeling energized and satisfied, with a rustic charm that makes mornings something to look forward to.

Lightly grease a 7x11 inch rectangular baking dish and spread the oat mixture in it Recipe - Recipe Image

Ingredients You’ll Need

These ingredients are straightforward but carefully chosen to bring out the best textures and flavors in your oatmeal bake. Each one plays a key role in creating that perfect balance of moistness, sweetness, and a hint of crunch.

Old fashioned oats: Using 2 cups ensures a hearty, chewy base that soaks up all the flavors beautifully.
Milk: 3/4 cup of unsweetened almond milk adds creaminess without overpowering the dish.
Unsweetened applesauce: At 1 cup, it gives natural sweetness and keeps things moist without extra fat.
Chopped walnuts: 1/4 cup optional, but these bring a lovely crunch and nutty depth.
Egg whites: ½ cup (about 3 large eggs) binds everything together, making it firm but tender.
Stevia blend: Just 3 tablespoons add sweetness while keeping it low in sugar.
Pure vanilla extract: 2 teaspoons to infuse the bake with rich, comforting aroma.
Cinnamon: 1.5 teaspoons lend warmth and spice that complements the berries.
Baking powder: ½ teaspoon boosts lightness and helps the bake rise gently.
Salt: A pinch of ¼ teaspoon to balance all the sweet notes.
Blueberries: 2 cups fresh or frozen for bursts of fruity juiciness throughout.

How to Make Easy Blueberry Oatmeal Bake Recipe for Cozy Fall Mornings

Step 1: Mix the Ingredients

Start by combining all the ingredients except the blueberries into a large mixing bowl. This way, the oats get fully coated with the flavorful blend of cinnamon, vanilla, and sweetening, while the egg whites help everything come together smoothly. If you prefer a bit of crunch, fold in the chopped walnuts right at this stage.

Step 2: Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it

This is where the magic starts to happen. Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it evenly. If you’re using frozen blueberries, add half of the oat mixture first, then sprinkle half of the berries on top. Repeat this layering so every bite gets some of that juicy blueberry goodness. This step ensures the bake cooks evenly and makes cleanup easier, too.

Step 3: Chill the Dish Overnight

Cover your baking dish with plastic wrap or a clean towel, then pop it in the fridge overnight. This chilling period lets the oats soak up all the liquid and flavors, resulting in a creamy, tender texture once baked. Plus, it’s a fantastic way to prep ahead and wake up to a ready-to-bake breakfast.

Step 4: Bake to Golden Perfection

When morning comes, preheat your oven to 350°F. Remove the dish from the fridge and bake for about 30 to 35 minutes until the top is set and beautifully golden. After baking, let it cool on a wire rack for 5 to 10 minutes; this helps it firm up further and makes slicing a breeze. Remember, Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it again if you prefer prepping batches in advance.

How to Serve Easy Blueberry Oatmeal Bake Recipe for Cozy Fall Mornings

Garnishes

Serving this oatmeal bake is a joy because you can dress it up any way you like. Fresh blueberries or a sprinkle of chopped walnuts on top add a pop of color and texture. A drizzle of pure maple syrup or a dollop of Greek yogurt turns it into a delightful, luscious treat that feels slightly indulgent but stays wholesome.

Side Dishes

Though this oatmeal bake is hearty on its own, it pairs wonderfully with a simple side of scrambled eggs or slices of ripe avocado to introduce some savory balance. For a fresh contrast, try serving it alongside a vibrant fruit salad that adds brightness and variety to your breakfast plate.

Creative Ways to Present

If you’re serving guests or just want to jazz up your mornings, cut the bake into squares and skewer with fresh berries for mini breakfast kebabs. Another idea is layering slices between nut butter spread on whole-grain toast, creating a nutritious and portable breakfast or snack. Remember, the key step here is to Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it to achieve that perfect bake every time.

Make Ahead and Storage

Storing Leftovers

Leftover oatmeal bake can be stored in an airtight container in the refrigerator for up to 4 days. This is perfect for busy mornings when you want to grab a slice and go. The flavors actually deepen as it sits, making reheated portions just as tasty as fresh ones.

Freezing

Want to keep breakfast on hand for even longer? Wrap individual slices tightly in plastic wrap and place them in a freezer-safe bag. Frozen oatmeal bake lasts up to 3 months, so you can enjoy a homemade breakfast anytime without extra prep. Just be sure to Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it well before freezing so it bakes evenly when you thaw.

Reheating

Reheat leftovers gently in the microwave for about 60-90 seconds or warm them in a preheated 350°F oven for 10-15 minutes. A quick reheat keeps the texture moist and chewy, while a longer heat brings back some of that fresh-baked aroma.

FAQs

Can I use a different size baking dish?

While this recipe is designed for a 7×11 inch rectangular dish, you can adjust slightly with an 8×8 inch square pan or similar. Just keep an eye on baking times, as a thinner layer will bake faster.

Do I have to use egg whites?

If you’re avoiding eggs, alternatives like flaxseed “eggs” or commercial egg replacers work, but the texture may be a little different. The egg whites help bind the oats and add protein.

Can I substitute frozen blueberries?

Absolutely! Frozen blueberries work just as well as fresh and can even create a more vibrant color marbling when baked. Just layer them as described in the recipe to avoid staining too much.

Is there a dairy-free milk substitute?

Yes, unsweetened almond, oat, or coconut milk all make great dairy-free options that complement the flavors well without adding sweetness or fat.

How sweet is this oatmeal bake?

It has a gentle sweetness thanks to the Stevia blend and applesauce. You can adjust the sweetener amount according to your taste preferences, keeping it low sugar but flavorful.

Final Thoughts

This Blueberry Oatmeal Bake is such a heartwarming way to make mornings a little easier and a lot more delicious. By following the key step to Lightly grease a 7×11 inch rectangular baking dish and spread the oat mixture in it, you set yourself up for success every time. Whether you serve it as a quick weekday breakfast or a leisurely weekend treat, it’s bound to become a cherished favorite in your kitchen. Give it a try and watch how a simple, wholesome dish can brighten your whole day!

Easy Blueberry Oatmeal Bake Recipe for Cozy Fall Mornings

★★★★★

4.9 from 15 reviews

Author: anna
Total Time: 8 hours 45 minutes (includes overnight chilling)
Yield: 6 servings 1x
Diet: Gluten Free

Print Recipe

Description

A wholesome and delicious Blueberry Oatmeal Bake perfect for a nutritious breakfast or snack. This gluten-free, low-fat recipe combines oats, blueberries, and subtle sweetness with stevia, creating a warm, cinnamon-spiced casserole that can be prepared the night before and baked fresh in the morning.

Instructions

Mix the ingredients: In a large bowl, combine all ingredients except for the blueberries if using frozen. Stir thoroughly to ensure an even mixture. If using fresh blueberries, add them now and mix gently to combine.
Add to a casserole dish: Lightly grease a 7×11 inch rectangular baking dish. Spread the oat mixture evenly into the dish. If using frozen blueberries, layer half the oat mixture, sprinkle half the berries, then repeat with remaining oat mixture and blueberries to create layers.
Chill the dish: Cover the casserole dish with plastic wrap or a clean towel and refrigerate overnight. This allows the oats to absorb moisture and flavors for a perfect texture.
Bake the dish: The next morning, preheat your oven to 350°F (175°C). Remove the dish from the fridge and bake for 30-35 minutes, or until the bake is set and the top is golden brown.
Rest and serve: Let the oatmeal bake rest on a cooling rack for 5-10 minutes before slicing. Serve warm for a comforting breakfast or snack.

Notes

Substitute egg whites with mashed banana or flax egg for a vegan alternative.
Unsweetened almond milk is preferred for a low-calorie option, but any milk of choice works.
Stevia blend can be replaced with other sugar substitutes or honey depending on dietary preferences.
The bake can be stored in the refrigerator for up to 3 days and reheated before serving.
Chopped walnuts add a crunchy texture but can be omitted for nut-free diets.

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