Dessert

Baked Blueberry Oatmeal Recipe

BySana Jeannette December 3, 2025December 3, 2025

Introduction

Baked Blueberry Oatmeal is a warm, comforting breakfast that’s both hearty and naturally sweetened by fresh fruit. With a creamy texture and a touch of brown sugar, it’s perfect for busy mornings or leisurely weekends.

A close-up image shows a single thick slice of a blueberry baked dish on a white plate. The dish has an uneven top layer with creamy yellow baked batter mixed with dark purple blueberries and some brown pecan pieces, giving a textured, chunky look. The inside layers appear moist and dense, showing a mix of softened blueberries and slightly grainy batter with scattered nuts. A shiny silver fork rests on the bottom left of the plate, and the plate sits on a white marbled surface with a folded blue cloth nearby. photo taken with an iphone --ar 4:5 --v 7

Ingredients

3 cups old-fashioned rolled oats
6 cups milk

1 1/2 cups packed brown sugar
1 teaspoon salt

3 eggs, beaten
2 cups frozen blueberries

1/2 cup chopped pecans
Garnishes: milk, brown sugar, powdered sugar

Instructions

Step 1: In a large saucepan, combine the oats, milk, brown sugar, salt, and beaten eggs. Mix well and simmer over medium heat, stirring regularly until the mixture thickens, about 15–20 minutes.

Step 2: While the oatmeal cooks, grease a 9×13 inch baking pan and preheat your oven to 350°F (175°C).
Step 3: Once the oatmeal is thick, gently fold in the blueberries and chopped pecans until evenly distributed. Pour the mixture into the prepared pan.
Step 4: Bake in the preheated oven for 30 minutes or until the oatmeal is set and firm.

Step 5: To serve, scoop a portion into a bowl and top with warm milk, a sprinkle of brown sugar, and powdered sugar to taste.

Tips & Variations

Use fresh blueberries if available for a burst of freshness, or substitute with raspberries or chopped apples for a different fruity twist.
Add a teaspoon of cinnamon or vanilla extract during cooking for extra warmth and aroma.

For a nut-free version, omit the pecans or substitute with seeds like sunflower or pumpkin.

Storage

Store leftover baked oatmeal in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave with a splash of milk to restore creaminess and moisture.

How to Serve

A white square baking dish filled with a blueberry oat casserole. The bottom layer is a deep purple blueberry mix, bubbling slightly at the edges. The top layer is golden brown and textured with scattered oats and pecan pieces, creating a crunchy surface. The blueberries peek through the oat topping, adding dark blue and purple spots across the dish. The dish rests on a wooden surface with a white marbled textured background, alongside a small white bowl of blueberries and a blue cloth. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use a different type of milk?

Yes, you can substitute dairy milk with plant-based alternatives like almond, soy, or oat milk. Just make sure to choose an unsweetened variety to control the sweetness.

Can I prepare this recipe ahead of time?

Absolutely. You can cook the oatmeal base the night before and bake it fresh in the morning, or bake the entire dish ahead and simply reheat before serving.