Triple Berry Baked Oatmeal Cups (Easy Meal-Prep Breakfast)

If you’re anything like me, mornings go a lot smoother when I don’t have to worry about making breakfast. These triple berry baked oatmeal cups are one of my favorite grab-and-go options to have in the fridge or freezer for the week.

They’re soft, lightly sweet, and packed with juicy berries in every bite. Better yet, everything comes together in one bowl with simple ingredients I usually already have on hand. They’re the kind of recipe that works just as well for busy weekdays as it does for a slow weekend brunch.

Recipe Highlights

Here’s why I keep coming back to these oatmeal cups as one of my favorite healthy breakfast ideas:

Here’s everything I use to make these triple berry baked oatmeal cups, plus a few helpful notes and easy swaps:

• Rolled oats: Old-fashioned oats give these cups their hearty texture. Quick oats can work in a pinch, but the texture will be softer. I like Millville Old Fashioned Rolled Oats for this recipe.
• Oat flour: This helps bind everything together and creates a more tender, muffin-like texture. I usually just blend rolled oats into a fine flour at home using a food processor or high-speed blender. Two minutes should do it!
• Banana: The riper, the better. Brown, spotty bananas will give you the best flavor, natural sweetness, and moisture. Bananas are, overall, a great source of potassium and fiber.
• Eggs: Two large eggs help hold the oatmeal cups together and give them structure. If you need an egg-free option, flax eggs can work, though the texture will be slightly softer. Bonus: Eggs are a great source of protein and vitamin A.
• Honey: This natural sweetener keeps these lightly sweet without being overpowering. Pure maple syrup is an easy swap if that’s what you have on hand.
• Blueberriesraspberries, and blackberries: This mix of berries adds sweetness, tartness, and a vitamin C boost. Fresh or frozen work. For frozen, I suggest thawing them a bit first. Love berries and chocolate? Try my Raspberry Chocolate Chip Oatmeal Cups.
• Almond milk: Any milk works here, dairy milk or dairy-free, to add moisture and loosen the batter. Many plant milks are fortified with calcium, too.
• Coconut oil: Adds a little richness and keeps the cups from drying out. Melted butter or a neutral oil like avocado oil can work, too.
• Vanilla extract: A splash of vanilla extract rounds out the flavors and adds warmth to the overall taste.
• Ground cinnamon: Just a touch adds cozy flavor and pairs perfectly with the berries and banana.
• Baking powder: Baking powder gives these oatmeal cups a bit of lift so they’re not too dense.
• Salt: A small pinch enhances all the flavors and balances the sweetness.

Once you’ve tried these, feel free to play with flavors! My brown butter chocolate chip zucchini oatmeal cups, carrot cake oatmeal cupsand pumpkin oatmeal cups are all delicious.

How to Make Baked Oatmeal Cups

These oatmeal cups come together quickly. After you’ve made them once, you’ll be able to throw these together even faster, or play with the flavors!

Start by preheating the oven to 350ºF. I generously grease a standard muffin tin with coconut oil or nonstick spray. Don’t skip this step. Oatmeal cups have a tendency to stick, so make sure each cavity is well coated, especially around the edges.

In a medium bowl, mash the banana until it’s mostly smooth. A few small lumps are totally fine, but you don’t want large chunks. The texture of the mashed banana should look like thick, slightly lumpy applesauce.

Add the eggs, vanilla extract, honey, and almond milk, then whisk until fully combined and smooth. I prefer honey, but maple syrup works here, too.

In a separate bowl, stir together the rolled oats, oat flour, baking powder, cinnamon, and salt. Make sure to distribute everything evenly so you don’t end up with pockets of baking powder or spice.

Pour the wet ingredients into the dry ingredients and mix until just combined. Then add the melted coconut oil and stir again. Avoid adding your coconut oil any sooner, so it doesn’t harden into little chunks before all your ingredients are fully mixed. The batter should be thick but scoopable.

Gently fold in the berries last. Try not to overmix here, especially if you’re using raspberries or frozen fruit, as they can break apart and streak the batter. A few gentle folds are all you need.

Spoon the batter evenly into a prepared muffin tin, filling each cup to the top. Bake at 350ºF for 18-20 minutes. You’ll know the muffins are ready when the tops set and no longer look wet. Look for lightly golden edges and centers that feel firm to the touch and spring back slightly when touched.

If you insert a toothpick, it should come out mostly clean, with maybe a few moist crumbs.

Let the oatmeal cups cool in the pan for about 5-10 minutes before removing them. This helps them firm up and makes them easier to take out without falling apart. After that, transfer to a wire rack to cool completely.

This rolled oats recipe is perfect for meal prep, and the oatmeal cups hold up really well throughout the week. Store them in the fridge in an airtight container for up to 5 days. They stay soft and moist for the perfect quick breakfast or snack.

If I’m planning ahead, I double or triple the batch and keep a stash in the freezer for busy weeks. Freeze these oatmeal cups for up to 3 months in an airtight container. I store them in a single layer or with parchment between layers to prevent sticking.

When you’re ready to enjoy them, reheat in the microwave for 20-30 seconds for a warm serving, or let them thaw overnight in the fridge. They’re easier than a bowl of oatmeal!

More of My Favorite Oatmeal Recipes

Can I use stevia or applesauce as a substitute for the sweetener in this recipe?

You can, with a few adjustments. Applesauce is an easier swap. Replace the honey with an equal amount of unsweetened applesauce. The oatmeal cups will be slightly less sweet and a bit softer, but still delicious. It also adds extra moisture.

You can use stevia or brown sugar, but since it doesn’t add bulk like honey, the texture can turn out a little drier. If using stevia, consider adding a tablespoon or two of applesauce or milk to balance the moisture.

Can you use powdered peanut butter in baked oatmeal cups?

You can use powdered peanut butter, but it works best as an addition rather than a full substitute for any of the listed ingredients.

Powdered peanut butter adds a light peanut flavor and protein without the saturated fat, but it won’t give the same richness as regular peanut butter. If you want your oatmeal cups to have that peanut butter flavor, mix a few tablespoons into the batter along with a little extra liquid to keep the texture from drying out.

For a stronger peanut butter flavor, you can also swirl in regular peanut butter (or almond butter) before baking or add mini chocolate chips for a peanut butter-chocolate combo.

Peanut butter fans, don’t miss my Peanut Butter Chocolate Chip Baked Oatmeal Cups or Peanut Butter Banana Baked Oatmeal.

How many mix-ins can I add to baked oatmeal cups?

Plain oatmeal cups aren’t as forgiving as baked oatmeal. Too many add-ins can make the cups fall apart or bake unevenly. A good rule of thumb is about 1-1½ cups total mix-ins.

Some easy combinations to try include diced apples and extra cinnamon for an apple cinnamon versionchopped pecans and chia seeds, or mini chocolate chips added to your berries.

This recipe is sponsored by ALDI. I was compensated and all opinions are my own. Thank you for supporting Fit Foodie Finds!