Overnight Baked Oatmeal with Blackberries and Bananas

by Erin

Wake up to a warm breakfast! Prep this oatmeal the night before and pop it in the oven in the morning for a delicious start to your day.

Overnight Baked Oatmeal #Blackberry #Banana

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Overnight oatmeal folks. It’s when you mix all the ingredients together, but instead of popping in the oven or on the stove top, you cover it up and let it sleep in the refrigerator overnight. Just like you – except you will be in a cozy warm bed.

After you wake up and pre-heat the oven, place it in to bake and proceed with your usual getting-ready-in-the-am-routine. Thirty minutes later you will be enjoying a nice warm bowl of goodness!

Overnight Baked Oatmeal with Blackberries and Bananas #easybreakfast

Don’t you just love when past-you is looking out for future-you? Some of my favorite breakfast/brunch dishes have overnight steps. Take my overnight baked apple French toast for example. It also happens to be a huge hit with guests!

Or if I need something with even less cooking time in the morning, there’s always overnight oats, which as easily customizes based on your cravings. 

Overnight Baked Oatmeal with Blackberries and Bananas #oatmeal

For some strange reason, blueberries were absent from Kroger when I went grocery shopping for this recipe so I snatched up the blackberries instead. I obviously don’t know what it would’ve been like with blueberries, but I do know that with blackberries this was outstanding (notice the modesty).

You can obviously change this up to use whatever berries you have on hand. Also, while I used fresh you could just as easily use frozen, thawed ones as well. Maybe you want a crispier cinnamon-sugar topping? Go for it!

The leftovers were just as awesome! I added a little extra milk after reheating and it was like new again. Actually, that’s my trick for reheating any leftover oatmeal. 

Even my leftover-oatmeal-hating-husband loved this oatmeal the next day. He legit suggested I make this again the other day and I was stunned.

I bet it’s because it has more texture to it due to the baked crusty top. Which means there is a lot more baked oatmeal in my future. Nothing wrong with that!

Post updated 8/25/20, two photos above are the originals.

One year ago: Chocolate Chip Cookie Dough Cupcakes

Overnight Baked Oatmeal #Blackberry #Banana


Yield: 6 servings Cooking Time:
Nutrition facts: 200 calories 20 grams fat


  • 2 very ripe medium bananas, sliced into 1/2" pieces
  • 1-1/2 cup blackberries
  • 1/4 cup honey (or agave), divided
  • 1 cup uncooked old-fashioned rolled oats
  • 1/4 cup chopped walnuts or pecans, divided
  • 1/2 tsp baking powder
  • 3/4 tsp cinnamon, divided
  • Pinch of salt
  • 1 cup 2% milk (or any milk you desire)
  • 1 egg
  • 1 tsp vanilla extract


  1. Preheat oven to 375 degrees. Lightly spray an 8 x 8" or 9 x 9" ceramic or glass baking dish with cooking spray; set aside.
  2. Arrange the banana slices in a single layer on the bottom of the ceramic dish. Sprinkle half of the blackberries over the bananas, 1/4 tsp of the cinnamon, 1 Tbsp of the honey and cover with foil. Bake 15 minutes, until the bananas get soft.
  3. Meanwhile, in a medium bowl, combine the oats, half of nuts, baking powder, remaining cinnamon, and salt; stir together.  In a separate bowl, whisk together the remaining honey, milk, egg, and vanilla extract.
  4. Remove the dish from the oven and allow to cool. Then pour the oat mixture over the bananas and blackberries.
  5. Pour the milk mixture over the oats, making sure to distribute the mixture as evenly as possible over the oats.  Sprinkle the remaining blackberries and walnuts over the the top. Cover tightly with plastic wrap and set in the fridge overnight.
  6. Preheat the oven to 375 degrees.  Remove the plastic wrap and bake the oatmeal for 30-35 minutes, or until the top is golden brown and the oatmeal has set. Serve warm from the oven. Store any leftovers covered in the refrigerator.
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Source: Adapted slightly from Gina’s Skinny Taste.

Did you make this recipe? I want to see!
Tag @THESPIFFYCOOKIE on Instagram and hashtag it #THESPIFFYCOOKIE

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Vicki @ WITK May 17, 2012 - 7:57 pm

Bah, I wasn’t the lucky winner. Bummer. Great looking oatmeal though, I’ve been eating lots of oatmeal for breakfast these days. So good!

Jennifer @ Peanut Butter and Peppers May 16, 2012 - 11:18 pm

Yum! This looks great!! I have to give this one a try!!!

Stephanie @ Eat. Drink. Love May 16, 2012 - 9:47 pm

I would LOVE to sit down to this for breakfast!

kita May 16, 2012 - 8:10 pm

Oooh Im diggin’ on the blackberry banana combo. I can love me some oatmeal when the breakfast moon hits me. :D

Janet@FCTC May 16, 2012 - 7:51 pm

Oooo, I love oatmeal. And I love blackberries… and bananas..and honey…and… ok, I think you get my point hehe. YUMMY!

Carolyn May 16, 2012 - 5:57 pm

Hello deliciousness for breakfast! ;)

Steph@stephsbitebybite May 16, 2012 - 5:28 pm

This makes me so happy!! I die for hot steamy oatmeal!! (I plop a scoop a pb on top to get all melty!)

Emily @ Life on Food May 16, 2012 - 5:05 pm

I cannot do overnight oats because there is just something wrong for me to have oatmeal cold. I love this recipe though. I can definitely plop it in the oven. Great recipe!

Jessica@AKitchenAddiction May 16, 2012 - 2:23 pm

This looks like a wonderful breakfast! Love the fresh blackberries!

Tracey May 16, 2012 - 12:58 pm

I have been looking for a way to use some leftover blackberries from our Mother’s Day brunch, thanks for the inspiration! :)

spiffycookie May 16, 2012 - 1:04 pm

Wanna know how I use up leftovers berries? By popping them into my mouth! haha

Lynna May 16, 2012 - 12:43 pm

I don’t really like eating oatmeal…but I kind of like baked oatmeal. Kind of. Not sure why…but this is enough for me to try this!

Georgia @ The Comfort of Cooking May 16, 2012 - 10:05 am

Love this overnight oatmeal! It looks so delicious, and since I need my berry fill every day, it’s a great way to get them. Thanks for sharing, Erin!

DessertForTwo May 16, 2012 - 9:46 am

I like the idea of sleeping while my oatmeal sleeps too :)

Tara @ Chip Chip Hooray May 16, 2012 - 9:39 am

I make this oatmeal all the time, but I’ve never tried letting it sit overnight first–hmmm! And yum, too, clearly. :)

Chung-Ah | Damn Delicious May 16, 2012 - 9:36 am

I made a similar version with blueberries only and absolutely loved it. Can’t wait to try your version!


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