Start your day on a bright and delicious note with this Lemon Blueberry Baked Oatmeal.

It’s a healthy breakfast recipe that brings together the refreshing zest of lemon with the sweet burst of blueberries, all baked into a comforting and satisfying dish. Perfect for busy mornings or a relaxed weekend brunch, this recipe is designed to be both easy to prepare and incredibly flavorful.
This baked oatmeal offers a wonderful alternative to traditional stovetop oats, providing a heartier texture and a more substantial meal. It’s a fantastic way to enjoy a protein-rich breakfast that feels like a treat but is packed with wholesome ingredients. Get ready to discover your new favorite breakfast staple!
Table of Contents
- What You’ll Love About This Quick And Easy Recipe
- Everything You Need To Make This Recipe Without Stress
- Time Needed From Start To Finish
- How To Make It Step By Step With Visual Cues
- Easy Variations And Serving Ideas That Fit Real Life
- Common Slip-Ups And How To Avoid Them
- How To Store It And Make It Ahead Without Ruining Texture
- Questions People Always Ask Before Making This Recipe

Lemon Blueberry Baked Oatmeal
- Total Time: 40 minutes
- Yield: 6-8 servings 1x
Description
Start your day on a bright and delicious note with this Lemon Blueberry Baked Oatmeal. It’s a healthy breakfast recipe that brings together the refreshing zest of lemon with the sweet burst of blueberries, all baked into a comforting and satisfying dish. Perfect for busy mornings or a relaxed weekend brunch, this recipe is designed to be both easy to prepare and incredibly flavorful. This baked oatmeal offers a wonderful alternative to traditional stovetop oats, providing a heartier texture and a more substantial meal. It’s a fantastic way to enjoy a protein-rich breakfast that feels like a treat but is packed with wholesome ingredients. Get ready to discover your new favorite breakfast staple!
Ingredients
Instructions
1. Preheat your oven to 375 F (190 C) and lightly grease an 8×8 inch baking dish with butter or cooking spray. This prevents sticking and ensures easy removal.
2. In a large mixing bowl, combine the dry ingredients: rolled oats, granulated sugar, baking powder, salt, and lemon zest. Whisk them together until they are well combined, ensuring the lemon zest is evenly distributed for maximum flavor.
3. In a separate medium bowl, whisk together the wet ingredients: milk, egg, melted butter (or coconut oil), and vanilla extract. Whisk until the egg is fully incorporated and the mixture is smooth.
4. Pour the wet ingredients into the bowl with the dry ingredients. Stir gently with a spoon or spatula until just combined. Be careful not to overmix, as this can lead to a tougher texture.
5. Gently fold in the blueberries. If using frozen blueberries, there’s no need to thaw them first. Distribute them evenly throughout the mixture.
6. Pour the oatmeal mixture into the prepared 8×8 inch baking dish, spreading it evenly with your spatula.
7. Bake for 30 minutes, or until the top is lightly golden brown and the oatmeal is set in the center. A good visual cue is when a knife inserted into the center comes out mostly clean.
8. Remove from the oven and let it cool for a few minutes before serving. This allows the oatmeal to firm up slightly, making it easier to serve.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Category: breakfast
- Method: baking
- Cuisine: american
Nutrition
- Serving Size: 1 serving
Keywords: oatmeal, baked oatmeal, lemon, blueberry, breakfast, healthy, easy, make ahead, brunch, vegetarian
What You’ll Love About This Quick And Easy Recipe

This Lemon Blueberry Baked Oatmeal is truly a game-changer for anyone looking for a healthy, convenient, and delicious breakfast option. It works so well because it’s incredibly forgiving and adaptable, making it perfect for beginners in the kitchen or seasoned home cooks alike. You’ll love that it’s a one-pan wonder, meaning less cleanup and more time to enjoy your morning. This recipe is ideal for families, meal preppers, or anyone who appreciates a warm, comforting start to their day without a lot of fuss. Serve it as a special brunch centerpiece when friends come over, or simply as a nutritious weekday breakfast to fuel your morning. The combination of sweet blueberries and bright lemon zest is a classic for a reason, offering a delightful flavor profile that appeals to almost everyone.
Everything You Need To Make This Recipe Without Stress
Gathering your ingredients for this Lemon Blueberry Baked Oatmeal is straightforward, using common pantry staples and fresh produce. You won’t need any exotic items, which makes this recipe even more accessible for everyday cooking.
INGREDIENTS: 2 cups rolled oats (old-fashioned) 1/2 cup granulated sugar 1 teaspoon baking powder 1/2 teaspoon salt 1 teaspoon lemon zest (from 1-2 lemons) 1 1/2 cups milk (dairy or non-dairy) 1 large egg 1/4 cup melted butter or coconut oil 1 teaspoon vanilla extract 1 cup fresh or frozen blueberries
For the rolled oats, opt for old-fashioned oats rather than instant or steel-cut. Old-fashioned oats provide the best texture for baked oatmeal, holding their shape without becoming mushy. If you prefer a slightly less sweet oatmeal, you can reduce the granulated sugar to 1/4 cup without significantly impacting the texture. For a dairy-free version, simply swap out the regular milk for almond milk, soy milk, or oat milk, and use coconut oil instead of butter. Both options work beautifully and maintain the delicious flavor. When choosing blueberries, fresh are wonderful, but frozen blueberries work just as well and can be added directly to the mixture without thawing.
Time Needed From Start To Finish
Preparing this Lemon Blueberry Baked Oatmeal is surprisingly quick, making it an excellent choice for busy mornings or when you want a warm breakfast without a long wait.

Prep time: 10 minutes Cook time: 30 minutes Total time: 40 minutes
How To Make It Step By Step With Visual Cues
Making this baked oatmeal is a simple process, and following these steps will ensure a perfect result every time.
- Preheat your oven to 375°F (190°C) and lightly grease an 8×8 inch baking dish with butter or cooking spray. This prevents sticking and ensures easy removal.
- In a large mixing bowl, combine the dry ingredients: rolled oats, granulated sugar, baking powder, salt, and lemon zest. Whisk them together until they are well combined, ensuring the lemon zest is evenly distributed for maximum flavor.
- In a separate medium bowl, whisk together the wet ingredients: milk, egg, melted butter (or coconut oil), and vanilla extract. Whisk until the egg is fully incorporated and the mixture is smooth.
- Pour the wet ingredients into the bowl with the dry ingredients. Stir gently with a spoon or spatula until just combined. Be careful not to overmix, as this can lead to a tougher texture.
- Gently fold in the blueberries. If using frozen blueberries, there’s no need to thaw them first. Distribute them evenly throughout the mixture.
- Pour the oatmeal mixture into the prepared 8×8 inch baking dish, spreading it evenly with your spatula.
- Bake for 30 minutes, or until the top is lightly golden brown and the oatmeal is set in the center. A good visual cue is when a knife inserted into the center comes out mostly clean.
- Remove from the oven and let it cool for a few minutes before serving. This allows the oatmeal to firm up slightly, making it easier to serve.
Easy Variations And Serving Ideas That Fit Real Life
This Lemon Blueberry Baked Oatmeal is fantastic on its own, but there are many ways to customize it to suit your family’s tastes or to elevate it for a special occasion. For a kid-friendly twist, consider adding a sprinkle of mini chocolate chips along with the blueberries – chocolate and lemon is a surprisingly delicious combination! You could also swap out half of the blueberries for raspberries or blackberries for a mixed berry experience. A pinch of cinnamon or nutmeg added to the dry ingredients can also introduce a warm, comforting spice note.
When serving, a drizzle of maple syrup or honey over individual portions adds a touch more sweetness. A dollop of Greek yogurt or a splash of milk can also be a lovely addition, providing extra creaminess. For a brunch buffet, cut the baked oatmeal into squares and arrange them on a platter. You can offer a small bowl of extra fresh blueberries or lemon slices on the side for garnish. This dish is also wonderful served with a side of crispy bacon or a fresh fruit salad for a complete meal.
Common Slip-Ups And How To Avoid Them
Even simple recipes can have a few common pitfalls, but knowing what to look out for will help you achieve perfect Lemon Blueberry Baked Oatmeal every time.
One common mistake is overmixing the batter. Once you combine the wet and dry ingredients, stir just until everything is incorporated. Overmixing can develop the gluten in the oats, leading to a tougher, less tender baked oatmeal. Another slip-up is using instant oats instead of rolled oats. Instant oats are much finer and will result in a mushier texture that doesn’t hold up as well in baked dishes. Always opt for old-fashioned rolled oats for the best results.
Not greasing your baking dish sufficiently can also cause frustration. Even if your dish is non-stick, a light coating of butter or cooking spray ensures that your oatmeal squares lift out cleanly without sticking to the bottom or sides. Finally, underbaking can leave your oatmeal too soft and runny in the center. Always check for a golden-brown top and a set center; a knife inserted should come out mostly clean. If it seems too jiggly, give it a few more minutes in the oven.
How To Store It And Make It Ahead Without Ruining Texture
One of the best things about this Lemon Blueberry Baked Oatmeal is how well it stores and can be made ahead, making your mornings even easier.
To store any leftovers, allow the baked oatmeal to cool completely to room temperature. Then, cut it into individual servings or store the entire block in an airtight container in the refrigerator for up to 3-4 days. This makes for quick grab-and-go breakfasts throughout the week.
For making it ahead, you have a couple of options. You can bake the entire dish as directed, cool it, and then store it in the refrigerator. When you’re ready to eat, simply reheat individual portions in the microwave for 1-2 minutes, or in a toaster oven until warmed through. Alternatively, you can assemble the oatmeal mixture (steps 1-6) the night before, cover the baking dish tightly with plastic wrap, and refrigerate it overnight. In the morning, simply remove it from the fridge while the oven preheats, and then bake as instructed. You might need to add an extra 5-10 minutes to the baking time if starting from cold. This make-ahead method is fantastic for fresh-baked goodness without the morning rush.
Questions People Always Ask Before Making This Recipe
Can I use steel-cut oats for this recipe? No, it’s not recommended. Steel-cut oats have a different texture and require much more liquid and a longer cooking time, which would alter the recipe significantly. Stick to old-fashioned rolled oats for the best results.
Can I use frozen blueberries, or do they need to be fresh? You can absolutely use frozen blueberries! There’s no need to thaw them beforehand; just fold them directly into the mixture. They might release a little more liquid during baking, but it won’t negatively impact the dish.
Is this recipe gluten-free? If you use certified gluten-free rolled oats, then yes, this recipe can be made gluten-free. All other ingredients are naturally gluten-free.
Can I reduce the sugar amount? Yes, you can. The recipe calls for 1/2 cup of granulated sugar, but you can reduce it to 1/4 cup if you prefer a less sweet oatmeal. The blueberries and lemon provide plenty of natural flavor.
How do I know when the baked oatmeal is done? The oatmeal is done when the top is lightly golden brown and the center is set. You can test it by inserting a knife into the middle; it should come out mostly clean.
Can I add

FAQs
- Can I make these ahead? Yes—prep ahead, refrigerate, then serve when ready.
- How long do leftovers last? Store covered in the fridge for 3–4 days for best texture.
- Can I adjust sweetness? Yes—add more or less sweetener to taste.
- Can I change the fruit? Yes—swap strawberries for blueberries, raspberries, or sliced banana.












