Wake up to the warm, comforting aroma of blueberry baked oatmeal. This easy, nutritious recipe combines rolled oats, fresh blueberries, eggs and maple syrup into a satisfying baked breakfast that’s perfect for busy mornings, meal prep, or a cozy weekend brunch. It’s naturally filling, simple to make, and stores well in the fridge or freezer.
Blueberry Baked Oatmeal Recipe
This blueberry baked oatmeal is a go-to breakfast when you want something wholesome and slightly sweet without excess sugar. Rolled oats provide fiber and sustained energy, blueberries add antioxidants and bright flavor, and a touch of maple syrup gives natural sweetness. It can be sliced and served warm, or chilled and reheated—either way it makes mornings easier and tastier.
Why this baked oatmeal works
- Simple to prepare – Mix the ingredients, layer the oats and berries, and bake. It’s fast to assemble and keeps well for several days.
- Filling and nutritious – Old-fashioned oats and nuts add fiber and healthy fats to help you stay satisfied through the morning.
- Versatile – Serve warm with milk or yogurt, or refrigerate and reheat individual portions. You can also freeze servings for later.
What is baked oatmeal?
Baked oatmeal is essentially an oatmeal casserole. Instead of cooking oats on the stovetop, you mix them with eggs, milk and sweeteners, then bake until set. The texture is somewhere between soft baked granola and a firm porridge that can be sliced. Adding fruit—like blueberries—gives bursts of flavor and extra nutrition.
Oats to use
For this recipe use old-fashioned (rolled) oats. Quick oats are more processed and can become overly soft during baking. If you need a gluten-free option, choose oats specifically labeled “gluten free” to avoid cross-contamination.
Make-ahead and storage
This baked oatmeal is ideal for planning ahead. You can mix the ingredients the night before and refrigerate the mixture for up to 24 hours before baking. After baking, store leftovers in an airtight container in the refrigerator for up to one week. Portions can also be wrapped and frozen for up to three months—thaw in the fridge and reheat in the microwave, toaster oven or conventional oven.
Ingredients
- 2 cups old-fashioned oats
- ¾ cup milk (dairy or plant-based)
- ¼ cup chopped walnuts
- 2 eggs
- ¼ cup maple syrup
- 2 tsp vanilla extract
- 2 tsp ground cinnamon
- ½ tsp baking powder
- ¼ tsp salt
- 2 cups fresh blueberries
How to Make Blueberry Baked Oatmeal
Step 1 — Combine the wet and dry ingredients
Preheat the oven to 350°F (175°C). In a large bowl, add the oats, milk, chopped walnuts, eggs, maple syrup, vanilla, cinnamon, baking powder and salt. Break the eggs and whisk or stir well so everything is evenly combined.
Step 2 — Layer in the pan
Grease an 8×8-inch casserole dish with nonstick spray or a little oil. Spread half of the oat mixture in an even layer across the bottom of the dish. Scatter half of the blueberries over that layer.
Gently spread the remaining oat mixture over the berries, pressing lightly to create an even top. Sprinkle the remaining blueberries on top.
Step 3 — Bake
Bake at 350°F (175°C) for 25–35 minutes, until the top is golden and the center is set. Baking time will vary by oven and dish depth—start checking at 25 minutes. Let cool slightly before slicing.
Recipe Notes
- Prep time: about 5 minutes. Cook time: about 25–35 minutes. Total time: approximately 40 minutes.
- Serves: about 6 people (depending on portion size).
- Variation: swap walnuts for pecans or almonds, or stir in a handful of chia seeds for extra fiber and omega-3s.
- Reheating: microwave individual slices for 30–60 seconds, or warm in a toaster oven until heated through.
Nutrition (approximate per serving)
- Calories: 225 kcal
- Carbohydrates: 36 g
- Protein: 7 g
- Fat: 7 g (Saturated fat: 1 g)
- Fiber: 5 g
- Sugar: 14 g
Nutrition information is provided as an approximation and will vary with ingredient brands and portion sizes.
Enjoy
This blueberry baked oatmeal is ideal for busy mornings, a healthy brunch, or a make-ahead breakfast. It’s flavorful, adaptable, and stores well—making it a reliable addition to your weekly rotation.