Easy Overnight Blueberry Baked Oatmeal with Almond Crumble
A make-ahead breakfast featuring creamy baked oatmeal with bursts of jammy blueberries and a crunchy almond crumble topping. Perfect for busy mornings or lazy weekends.
- Prep Time: 15 minutes
- Cook Time: 35-40 minutes
- Total Time: 6 hours 50 minutes (includes overnight rest)
- Yield: 6 servings 1x
- Category: Breakfast
- Cuisine: American
Ingredients
Scale
- 2 cups (180g) rolled oats
- 1 ½ cups (360ml) milk (any kind)
- ⅓ cup (80ml) pure maple syrup
- 1 large egg
- 2 tablespoons (30ml) melted coconut oil or butter
- 1 teaspoon vanilla extract
- ¼ teaspoon salt
- ½ teaspoon cinnamon
- 1 ½ cups (225g) blueberries (fresh or frozen, do not thaw)
- ½ cup (45g) sliced almonds
- ¼ cup (22g) rolled oats
- 2 tablespoons (25g) coconut sugar or brown sugar
- 1 tablespoon (15ml) melted coconut oil or butter
- ¼ teaspoon cinnamon
Instructions
- Lightly grease an 8×8-inch baking dish with butter or coconut oil.
- Spread 1 ½ cups of blueberries evenly across the bottom of the prepared dish. If using frozen berries, add them straight from the freezer.
- In a medium bowl, whisk together milk, maple syrup, egg, melted coconut oil (or butter), vanilla extract, salt, and cinnamon until smooth.
- Pour 2 cups of rolled oats into the bowl with the wet ingredients and stir until all oats are evenly coated.
- Pour the oat mixture evenly over the blueberries in the baking dish. Do not stir.
- In a small bowl, combine sliced almonds, ¼ cup rolled oats, coconut sugar (or brown sugar), ¼ teaspoon cinnamon, and 1 tablespoon melted coconut oil. Stir with a fork until moistened and clumpy.
- Sprinkle the almond crumble evenly over the top of the oatmeal. Do not press down.
- Cover the dish tightly with plastic wrap or a lid and refrigerate for at least 6 hours, or up to 12 hours.
- When ready to bake, preheat oven to 375°F (190°C). Remove dish from fridge and let sit on counter for about 10 minutes.
- Bake uncovered for 35-40 minutes, until top is golden brown and edges are bubbling. Center should be set but slightly jiggly.
- Let cool for 5-10 minutes before serving.
Notes
Do not skip the overnight rest; it ensures creamy texture. If using frozen blueberries, add them frozen to prevent discoloration. Let oatmeal rest before serving to set properly. For a vegan version, use a flax egg and plant-based milk.
Nutrition
- Serving Size: 1 serving (1/6 of re
- Calories: 320
- Sugar: 20
- Sodium: 180
- Fat: 12
- Saturated Fat: 5
- Carbohydrates: 48
- Fiber: 6
- Protein: 8
Keywords: overnight oatmeal, baked oatmeal, blueberry oatmeal, almond crumble, make-ahead breakfast, healthy breakfast