Lemon Blueberry Baked Oats
This Lemon Blueberry Baked Oats recipe is breakfast that actually tastes good. Rolled oats, protein powder, applesauce, fresh lemon juice and zest, and a full cup of blueberries baked in a 9×9 dish until golden at the edges and set in the center. Slice it up, refrigerate it, and reheat a square every morning for the rest of the week. It tastes bright and slightly sweet and genuinely satisfying in a way that a bowl of plain oatmeal never quite manages.
Why You’ll Love This Recipe
Make it once on Sunday and have breakfast handled for five days. It reheats in under a minute and tastes just as good on day four as it did fresh out of the oven.
No banana means the lemon flavor is front and center. If you’ve made baked oats with banana before and wished the other flavors came through more clearly, this is the version for that.
Protein powder baked right in makes each square a genuinely filling, high-protein breakfast that keeps you full all morning without any extra effort.
– Lyuda
Ingredients Needed to Make Lemon Blueberry Baked Oats
The Wet Base
Eggs add structure and bind everything together. Unsweetened applesauce replaces the banana in this recipe and adds moisture and a slight natural sweetness without any detectable apple flavor in the finished oats. Maple syrup adds a clean sweetness. Milk of any variety loosens the batter to the right consistency. Fresh lemon juice and lemon zest together add the bright citrus flavor throughout. Vanilla adds warmth.
The Dry Ingredients
Old-fashioned rolled oats are the primary base (don’t use quick oats which produce a mushier texture). Oat flour adds a slightly more cohesive, less grainy texture. Protein powder adds protein and a slight vanilla depth (vanilla or unflavored work best). If you don’t have protein powder swap it for an additional 1/4 cup of oat flour. Baking powder provides the slight lift. Salt balances the sweetness.
The Blueberries
Fresh or frozen blueberries both work. Frozen go in straight from the freezer. Be sure to not thaw them first or they’ll bleed into the batter.
See the recipe card below for exact ingredient amounts, nutritional information, and detailed instructions.
How to Make Lemon Blueberry Baked Oats
Step 1: Mix the Wet Ingredients
Preheat the oven to 350°F and grease a 9×9-inch baking dish. Whisk together the eggs, applesauce, maple syrup, milk, lemon juice, lemon zest, and vanilla in a large bowl until smooth and well combined.
Step 2: Add the Dry Ingredients
Add the rolled oats, oat flour, protein powder, baking powder, and salt to the wet mixture. Stir until everything is evenly combined with no dry pockets remaining. If the mixture looks unusually thick add another splash of milk.
Step 3: Add the Blueberries
Fold in most of the blueberries gently. Reserve a small handful to scatter over the surface before baking.
Step 4: Bake
Pour the mixture into the prepared baking dish and spread into an even layer. Scatter the reserved blueberries over the top. Bake for 35 to 40 minutes until the edges are lightly golden and the center is set but still slightly soft when you press it gently. Don’t overbake.
Step 5: Cool and Serve
Let cool for 10 to 15 minutes before slicing. Serve warm or refrigerate and serve cold throughout the week with Greek yogurt, extra blueberries, or a drizzle of maple syrup.
Storing and Reheating
Store covered in the refrigerator for up to 5 days. Reheat individual squares in the microwave for 45 to 60 seconds until warm. This is specifically designed as a meal prep recipe, so it gets better as it sits and the texture is excellent throughout the full storage window.
More Breakfast Recipes to Check Out
Serving Suggestions
Serve warm with a spoonful of Greek yogurt on top and a handful of fresh blueberries alongside. A small drizzle of maple syrup over the top adds extra sweetness if desired. For a complete high-protein breakfast meal prep week, I love making these alongside High Protein Biscuits, which creates a sweet baked oat option and a savory biscuit option so you have variety every morning without making anything new.
Frequently Asked Questions About Lemon Blueberry Baked Oats
If you make this, I’d love to hear how it turned out – a star rating or a note in the comments helps others find the recipe and helps me know what’s working in your kitchen. Tag me @gracefilledkitchen in your photos on social media so I can see your creations.
Lemon Blueberry Baked Oats (No Banana)
Ingredients
Method
- Preheat your oven to 350°F. Lightly grease a 9×9-inch baking dish with cooking spray or butter.
- In a large bowl, whisk together the eggs, applesauce, maple syrup, milk, lemon juice, lemon zest, and vanilla extract until smooth.
- Add the rolled oats, oat flour, protein powder, baking powder, and salt. Stir until everything is evenly combined.
- Gently fold in the blueberries, reserving a few to scatter over the top if desired.
- Pour the mixture into the prepared baking dish and spread it into an even layer. Bake for 35–45 minutes, or until the edges are lightly golden and the center is set but still slightly soft.
- Let the baked oats cool for at least 10–15 minutes before slicing. Serve warm or chilled with Greek yogurt, extra blueberries, or a drizzle of maple syrup.
Notes
- Protein powder: Vanilla or unflavored protein powder works best. Different protein powders absorb liquid differently, so if your mixture seems unusually thick, add another splash of milk.
- *No protein powder: Replace the protein powder with ¼ cup additional oat flour, making ½ cup total oat flour.
- Fresh or frozen blueberries: Both work well. If using frozen blueberries, add them straight from the freezer without thawing.
- For stronger lemon flavor: Don’t skip the lemon zest. The zest provides much more concentrated lemon flavor than the juice alone.
- Don’t overbake: The center should be set but still soft. Overbaking can make baked oats dry, particularly when using protein powder.
- For sweeter baked oats: Add another tablespoon of maple syrup or use sweetened vanilla protein powder.
- For meal prep: Store covered in the refrigerator for up to 4–5 days. Reheat individual portions in the microwave until warm.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
If you make this, I’d love to hear how it turned out.
Leave a comment and star rating below!
If you make this, I’d love to hear how it turned out.
Leave a comment and star rating below!