If you've ever searched for baked oatmeal recipes online, you've probably noticed they're all over the map. Some are barely sweet, while others contain enough butter, oil, and sugar that they taste more like cake than breakfast.
We were aiming for something different: a baked oatmeal that's hearty enough for breakfast, lightly sweetened, and satisfying enough that you'd actually want to meal prep it every week.
We wanted a baked oatmeal that felt like something you'd genuinely want to meal prep for the week. One that's hearty, satisfying, and just sweet enough to remind you of a berry muffin without tasting like dessert.
This recipe took us several rounds of testing. We experimented with different amounts of sweetener, yogurt, butter, and Bloom Boost before landing on this version. The result is a moist, flavourful baked oatmeal that lets the oats, cinnamon, vanilla, and fruit shine while adding extra fibre from Bloom Boost.
If you love sweeter breakfasts, feel free to drizzle your slice with a little extra honey or maple syrup, or simply increase the sweetener in the recipe next time!
Bonus: we've included a few variations you can make with this recipe, including apple cinnamon and carrot cake!
Why you'll love this recipe
- Great for meal prep
- A delicious way to use Bloom Boost
- Made with whole grain oats
- Contains Greek yogurt for added protein and moisture
- Easily customized with your favourite mix-ins
- Freezer-friendly
Whether you're looking for an easy weekday breakfast, something to prep for busy mornings, or a nourishing snack, this meal prep baked oatmeal checks all the boxes. Each square is hearty, satisfying, freezer-friendly, and delicious served warm or cold. We especially love topping ours with Greek yogurt and fresh berries for an extra protein boost.
Why We Love Bloom Boost in This Recipe
Bloom Boost is one of our favourite ingredients to bake with because it adds a boost of whole-food fibre without changing the flavour of the recipe. Made with a blend of flax, chia, psyllium husk, oat bran, hemp hearts, and pumpkin seed protein, it blends seamlessly into the batter while helping make each serving a little more satisfying.
Since most adults don't get enough fibre, recipes like this are an easy way to increase your intake using foods you're already eating. Pairing fibre with protein-rich Greek yogurt and whole grain oats also makes for a breakfast that's more likely to keep you feeling full throughout the morning.
If you don't have Bloom Boost, this recipe will still work without it. Simply replace the ¼ cup of Bloom Boost with an additional ¼ cup of rolled oats. The texture will be slightly different, and you'll miss out on some of the extra fibre, but it'll still be delicious.
The Best Baked Oatmeal for Meal Prep (with variations!)
Ingredients
- 2¾ cups rolled oats
- ¼ cup Bloom Boost
- 2 tsp baking powder
- ¼ tsp baking soda
- ¼ tsp salt
- 2 tsps cinnamon
- ¼ tsp ground nutmeg
- 2 eggs
- ¼ cup plain Greek yogurt (can also use sour cream)
- ¼ cup unsweetened applesauce*
- 1/2 cup + 2 tbs milk
- 2 tbsp melted butter
- 3 tbsp honey (or maple syrup)
- 2 tbsp packed brown sugar
- 2 tsps vanilla extract
- 1 cup blueberries or mixed berries (fresh or frozen)
*No applesauce? Substitute ½ cup mashed ripe banana. The baked oatmeal will be slightly sweeter and have a mild banana flavour.
How to Make Baked Oatmeal for Meal Prep:
- Preheat oven to 350°F (175°C). Grease or line an 8 × 8-inch baking dish with parchment paper. (Can also use a 9x9 inch baking pan, but decrease baking time as per below)
- In a large bowl, whisk together the eggs, Greek yogurt, applesauce, milk, melted butter, honey, brown sugar, and vanilla until smooth.
- Add the oats, Bloom Boost, baking powder, baking soda, salt, and cinnamon. Stir until combined.
- Fold in ¾ cup of the blueberries, then sprinkle the remaining ¼ cup over the top.
- Transfer to the prepared baking dish and spread into an even layer.
- Bake for 35-38 minutes, or until the centre is set and the top is lightly golden. (*note: if using a 9x9 pan, the squares will be thinner and will need less time in the oven. Start checking at 28 minutes)
- Let cool for 10–15 minutes before slicing into squares.
Serving suggestions
Enjoy warm or cold. We love serving ours with:
- A dollop of Greek yogurt
- Fresh berries
- Sliced bananas
- A drizzle of warm peanut butter or almond butter
- Chopped pecans or walnuts
- A drizzle of honey or maple syrup (especially if you prefer a sweeter breakfast)
Make it your own
🍎 Apple Cinnamon
Replace the blueberries with:
- 1–1½ cups diced apples
- 1/2 tsp ground ginger
- ¼ cup chopped pecans (optional)
🥕 Carrot Cake
Replace the blueberries with:
- 1 cup grated carrots
- 1/2 tsp allspice
- ¼ cup chopped pecans
- ¼ cup raisins (optional)
🍫 Chocolate Chip
Replace the blueberries with:
- ⅓ cup dark chocolate chips
Optional: sprinkle a few extra chocolate chips over the top before baking.
How to Store and Freeze Baked Oatmeal
Store leftovers in an airtight container in the refrigerator for up to 5 days.
To reheat, microwave individual squares for 20–30 seconds. You can also freeze slices for up to 3 months and thaw overnight in the refrigerator (or simply remove from freezer and defrost in microwave).
Tips for the Best Baked Oatmeal
- We recommend using rolled oats for the best texture. Quick oats will produce a softer, less chewy baked oatmeal.
- Fresh or frozen blueberries both work well. If using frozen, there's no need to thaw them first.
- This recipe is intentionally lightly sweetened. If you enjoy sweeter baked oatmeal, simply add an extra tablespoon or two of honey or brown sugar to the batter, or serve each slice with a drizzle of honey or maple syrup.
FAQs:
Can I freeze baked oatmeal?
Yes! Slice the baked oatmeal into squares and freeze in an airtight container for up to three months.
Can I use frozen blueberries or berries?
Absolutely. Add them straight from the freezer—no need to thaw.
Is baked oatmeal eaten hot or cold?
Both! We enjoy it warm with Greek yogurt, but it's also delicious cold straight from the fridge.
Can I make baked oatmeal ahead of time?
Yes. That's exactly what this recipe was designed for. Bake it once and enjoy breakfast throughout the week.
Bloom Boost adds a blend of whole-food fibre from flax, chia, psyllium, oat bran, hemp hearts, and pumpkin seed protein, making this baked oatmeal an easy way to increase your fibre intake without changing the flavour.
