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Blueberry Baked Oatmeal finished and ready to serve

Blueberry Baked Oatmeal

Quick Answer

Whisk milk, maple syrup, eggs, melted butter, and vanilla, then stir in oats and blueberries. Bake at 350°F for 35 to 40 minutes until the top is golden and the center is set, then rest 5 minutes before slicing.

Jump to Recipe

Oatmeal has spent years being served in bowls with the texture of wet paperwork, so baking it into golden-edged squares feels like a meaningful correction. This blueberry baked oatmeal mixes old-fashioned rolled oats with milk, eggs, melted butter, maple syrup, vanilla, cinnamon, and baking powder, then folds in a full cup of blueberries with more scattered over the top. The oven does the work that a saucepan usually does, except the finished oatmeal has enough structure to slice.

Old-fashioned oats are important here because they soften without disappearing. At 350°F, the eggs and milk set around the oats while the blueberries burst into pockets of juice, and the maple syrup sweetens the whole pan without turning breakfast into cake. Bake until the top is golden and the center no longer jiggles when the dish gets a gentle shake.

Let it cool for five minutes before cutting so those squares hold together. Warm, it is soft in the center with chewy oat texture around the edges; later, it reheats as an easy breakfast you can grab by the piece. Add another drizzle of maple syrup or a splash of milk if you want. The nice part is that nobody has to stand over a pot at 7 a.m. pretending stirring oats is character-building.

Prep25 minutes
Cook35 minutes
Total1 hour
Serves4 servings
DifficultyEasy

Ingredients

Servings
  • 2 cups old-fashioned rolled oats
  • 1 1/2 cups milk
  • 1/3 cup maple syrup
  • 2 eggs
  • 1/4 cup melted butter
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking powder
  • 1/2 teaspoon cinnamon
  • 1/4 teaspoon kosher salt
  • 1 1/2 cups fresh or frozen blueberries

Instructions

  1. 1Preheat oven to 350°F. Grease an 8x8 baking dish.
  2. 2Whisk milk, maple syrup, eggs, melted butter, and vanilla together in a large bowl.
  3. 3Stir in oats, baking powder, cinnamon, and salt. Fold in 1 cup of blueberries.
  4. 4Pour into the prepared baking dish. Scatter remaining blueberries on top.
  5. 5Bake 35 to 40 minutes until the top is golden and the center is set — it should not jiggle when you shake the dish.
  6. 6Let cool 5 minutes before slicing into squares. Serve warm with a drizzle of maple syrup or splash of milk.

Nutrition Information

Estimated per serving: 1 of 4 servings.

450Calories
12 gProtein
58 gCarbohydrates
20 gTotal Fat
10 gSaturated Fat
5 gFiber
27 gTotal Sugars
340 mgSodium
135 mgCholesterol

Estimated from the ingredients and quantities in this recipe using standard food-composition values. Brand choices, trimming, cooking loss, optional ingredients, and actual portion size can change the numbers. How we calculate nutrition estimates.

Pro Tips

  • Use old-fashioned oats, not quick oats or steel-cut. Quick oats turn to mush; steel-cut stay too firm.
  • Frozen blueberries work perfectly and are cheaper. Don't thaw them first or they bleed purple into everything.
  • This reheats beautifully — make a batch on Sunday and eat it all week.

Substitutions

blueberries → raspberries, sliced strawberries, or chopped peaches Any fruit works. Banana slices are also excellent.
maple syrup → honey or brown sugar Brown sugar gives a deeper, more molasses-like sweetness.
milk → oat milk or almond milk for dairy-free Both work. The texture will be slightly lighter.

Storage Instructions

Refrigerate covered for up to 5 days. Reheat slices in the microwave for 60 to 90 seconds.

Make Ahead

Mix everything the night before and refrigerate in the baking dish. Bake in the morning — add 5 minutes since it starts cold.

Freezing

Yes. Let the baked oatmeal cool completely, cut it into portions, and freeze the portions airtight. Thaw overnight in the refrigerator and reheat only what you need; add fresh berries or other toppings after reheating.

Frequently Asked Questions

Can I make this ahead of time?

Yes. Mix everything the night before and refrigerate in the baking dish. Bake in the morning — add 5 minutes since it starts cold.

How do I store the leftovers?

Refrigerate covered for up to 5 days. Reheat slices in the microwave for 60 to 90 seconds.

Can I freeze Blueberry Baked Oatmeal?

Yes. Let the baked oatmeal cool completely, cut it into portions, and freeze the portions airtight. Thaw overnight in the refrigerator and reheat only what you need; add fresh berries or other toppings after reheating.

Can I adjust it for what I have on hand?

Yes. Tested adjustments on this recipe include blueberries → raspberries, sliced strawberries, or chopped peaches; maple syrup → honey or brown sugar; and milk → oat milk or almond milk for dairy-free.

What's the most common mistake to avoid?

Use old-fashioned oats, not quick oats or steel-cut. Quick oats turn to mush; steel-cut stay too firm.

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About Lila

Lila is the editorial persona and visual host of Fork Around & Find Out Kitchen. Recipes presented in the Lila voice are developed, edited, and published under FAFO Kitchen's editorial standards.

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