Overnight Blueberry Baked Oatmeal Recipe

Overnight Blueberry Baked Oatmeal promises a heartwarming start to your day. This delightful dish blends tender oats soaked in milk with succulent blueberries, accompanied by a crunchy, cinnamon-infused streusel topping. Enjoy a satisfying, comforting breakfast that not only looks inviting but also delivers wholesome, fruity goodness at every bite.

I love kickstarting my mornings with this Overnight Blueberry Baked Oatmeal. Its balanced mix of whole grains and fruits makes for a nutritious and filling breakfast.

I use 2 cups of old fashioned rolled oats, 1 1/2 teaspoons of baking powder, 1/2 teaspoon of salt and 1 teaspoon of ground cinnamon to create a hearty base that adds fiber and flavor. Adding in 2 eggs and 1/3 cup of brown sugar, along with 2 cups of milk and 1 teaspoon of vanilla extract, gives the dish protein and creaminess.

Then I fold in 1 cup of blueberries that not only brighten the flavor but also provide antioxidants. The streusel topping is my favorite part – it’s made with 1/3 cup all-purpose flour, 1/3 cup rolled oats, 1/4 cup brown sugar, 1/4 cup cold butter and 1/2 teaspoon ground cinnamon, adding a satisfying crunch to this Overnight Oat Bake that doubles as a Breakfast Blueberry Casserole.

Enjoy it as a meal prep staple!

Why I Like this Recipe

I like this recipe because it’s super easy to prep the night before so I don’t have to rush in the morning. I love how the fresh blueberries add a burst of flavor to the soft, baked oats, making every bite feel refreshing. The crunchy streusel topping is awesome too; it gives the dish a nice texture contrast that really makes it special. And I also appreciate that I can use any dairy-free milk I prefer, which makes it versatile and perfect for my mornings.

Ingredients

• Rolled oats provide hearty fibre and slow-burning carbohydrates for lasting energy.
• Eggs supply high quality protein that helps repair muscles and keep you full.
• Blueberries burst with antioxidants and vitamins, boosting immunity and overall health.
• Milk offers calcium, extra protein, and a smooth creaminess for richer texture.
• Brown sugar naturally sweetens while adding moisture for a perfectly balanced flavor.
• Cinnamon infuses a warm, subtle spice that makes every bite more interesting.
• Baking powder and salt work together for proper rising and balanced taste.
• Cold butter adds a rich and creamy taste that balances the oat mix.

Ingredient Quantities

• 2 cups old fashioned rolled oats
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon salt
• 1 teaspoon ground cinnamon
• 2 large eggs
• 1/3 cup brown sugar, divided
• 2 cups milk (or any dairy-free milk if u prefer)
• 1 teaspoon vanilla extract
• 1 cup fresh blueberries (or frozen, just thawed)
• For the streusel topping: 1/3 cup all-purpose flour
• 1/3 cup old fashioned rolled oats
• 1/4 cup brown sugar
• 1/4 cup cold butter, cut into chunks
• 1/2 teaspoon ground cinnamon

How to Make this

1. Preheat your oven to 375°F and grease a medium sized baking dish lightly with butter.

2. In a large bowl, mix together 2 cups rolled oats, 1 1/2 teaspoons baking powder, 1/2 teaspoon salt and 1 teaspoon ground cinnamon.

3. In another bowl, whisk 2 large eggs with 1/3 cup of the brown sugar, 2 cups of milk and 1 teaspoon vanilla extract until well combined.

4. Stir the wet ingredients into the dry ingredients until just mixed, then gently fold in 1 cup of blueberries.

5. Cover the bowl with plastic wrap and let it sit in the fridge overnight so the oats can soak properly.

6. The next morning, take out the soaked mixture and give it a quick stir, then pour it evenly into your prepared baking dish.

7. For the streusel topping, in a separate bowl combine 1/3 cup all-purpose flour, 1/3 cup rolled oats, 1/4 cup brown sugar and 1/2 teaspoon ground cinnamon.

8. Add 1/4 cup cold butter cut into chunks to the topping mix, and use your fingers or a fork to mix until it forms a crumbly texture.

9. Sprinkle the crumbly streusel evenly over the oat mixture in the baking dish.

10. Bake in the preheated oven for 25 to 30 minutes until the top feels golden and the baked oatmeal is set, then let it cool slightly before serving.

Equipment Needed

1. An oven preheated to 375°F
2. A medium-sized baking dish that you can grease with butter
3. A large mixing bowl for all your dry ingredients
4. A separate bowl for whisking eggs, brown sugar, milk and vanilla extract
5. Measuring cups and spoons to make sure you get all the right amounts
6. A whisk for mixing the liquid ingredients until smooth
7. A spatula or wooden spoon to gently fold in the blueberries
8. Another small bowl for mixing the streusel topping
9. A fork to work the cold butter into the topping mix until it gets crumbly
10. Plastic wrap for covering the bowl while the oats soak in the fridge
11. Oven mitts or pot holders to safely take the dish out of the oven

FAQ

Overnight Blueberry Baked Oatmeal Recipe Substitutions and Variations

• If you dont have eggs, you can use a flax egg (mix 1 tablespoon ground flax with 3 tablespoons water for each egg) instead.
• You can swap the milk for almond milk or another dairy-free milk if you prefer a different flavor.
• If rolled oats arent available, you could use quick oats, but be aware it can change the texture a little.
• Replace brown sugar with an equal amount of coconut sugar if youd like a slight twist in taste.
• For the streusel topping, chill your butter out substitutes with coconut oil or margarine has worked well for me.

Pro Tips

1. Try not to stir the blueberry mix too much after the oats have soaked cause you dont want to break up the berries and get them all mushy.
2. Make sure your butter is ice cold when you make the streusel topping so you get that super crummy texture instead of a smooth paste.
3. If you’re using frozen blueberries, let them thaw first so that they don’t release too much water in the dish.
4. Experiment a little by tossing in some lemon zest or even a mix of berries if you like, it can really kick up the flavor!