Blueberry Baked Oatmeal

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Made with wholesome oats, juicy berries, and pecans, this blueberry baked oatmeal makes a comforting breakfast casserole.

Partially-served dish of blueberry baked oatmeal.

This blueberry baked oatmeal is a comforting breakfast casserole loaded with wholesome oats, juicy berries, and crunchy pecans. It’s quite different from porridgy stovetop oatmeal or overnight oats — think of it more like a giant, soft, good-for-you oatmeal cookie. It’s the perfect weekend brunch; you can assemble it the night before, let it sit in the fridge overnight, and then just pop it in the oven in the morning when you’re ready to eat. For serving, I like to sweeten some plain Greek yogurt with a little honey and dollop it on top.

“I made this for a girls weekend at the beach. Oh my! 10 women wolfed it down and asked for the recipe.”

Suzanne

What You’ll Need To Make Blueberry Baked Oatmeal

blueberry baked oatmeal ingredients
  • Old-fashioned rolled oats (not instant): Provide structure and texture, making the base of the oatmeal hearty and satisfying. Instant oats are not recommended.
  • Dark brown sugar: Adds sweetness and a hint of molasses flavor that complements the blueberries and spices.
  • Pecans: Offer a crunchy texture and nutty flavor.
  • Baking powder: Helps the oatmeal rise slightly, contributing to a lighter, more cake-like texture.
  • Cinnamon and nutmeg: Spice up the dish with warmth and depth, perfectly pairing with the sweetness of the oats and blueberries.
  • Eggs: Bind the ingredients together.
  • Milk: Adds moisture to the oatmeal, helping to create a creamy consistency as it bakes.
  • Vanilla extract: Infuses the dish with a sweet, aromatic flavor.
  • Butter: Ensures the oatmeal doesn’t stick to the dish and adds richness and flavor.
  • Blueberries: Burst with sweetness and slight acidity, adding juicy pops of flavor and vibrant color. If you can’t get fresh blueberries, frozen blueberries would also work nicely; no need to defrost them first.
  • Jump to the printable recipe for precise measurements

Step-by-Step Instructions

dry ingredients in a bowl

To begin, in a medium bowl, combine the oats, brown sugar, 1/4 cup of the nuts, baking powder, cinnamon, nutmeg, and salt. Mix well.

mixed dry ingredients

In another bowl, break up the eggs with a whisk; then whisk in the milk and vanilla until well combined.

whisked egg and milk mixture

Add the milk mixture to the oat mixture, along with the melted butter.

combining wet and dry ingredients

Mix to combine.

mixed wet and dry ingredients

Scatter 2 cups of the blueberries evenly over the bottom of a buttered 2-quart baking dish.

blueberries in baking dish

Pour the oatmeal mixture over top and spread evenly.

oat mixture in baking dish

Sprinkle the remaining 3/4 cup nuts and 1/2 cup blueberries on top.

blueberry baked oatmeal ready to bake

Bake for 45 to 55 minutes, until the pecans on top are a rich brown color and the oats are set.

blueberry baked oatmeal out of the oven

Let cool for at least 5 minutes, then serve warm or at room temperature with lightly sweetened Greek yogurt, if desired. Leftovers can be cut into squares, individually wrapped, and frozen. Then, for quick yet satisfying breakfasts, just pull a piece out of the freezer and microwave it until heated through.

Partially-served dish of blueberry baked oatmeal.

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Blueberry Pecan Baked Oatmeal

Made with wholesome oats, juicy berries, and pecans, this blueberry baked oatmeal makes a comforting breakfast casserole.

Servings: 6 to 8

Ingredients

  • 2 cups old-fashioned rolled oats (not instant)
  • ⅔ cup packed dark brown sugar
  • 1 cup chopped pecans, divided
  • 1 teaspoon baking powder
  • 2 teaspoons ground cinnamon
  • ¼ teaspoon ground nutmeg
  • ½ teaspoon salt
  • 2 large eggs
  • 1⅔ cups milk
  • 1 teaspoon vanilla extract
  • 3 tablespoons unsalted butter, melted, plus more for greasing the dish
  • 2½ cups blueberries, divided
  • Lightly sweetened Greek yogurt, for serving (optional)

Instructions

  1. Preheat the oven to 350°F and set an oven rack in the middle position. Grease an 8-inch or 2-quart baking dish with butter.
  2. In a medium bowl, combine the oats, brown sugar, ¼ cup of the nuts, baking powder, cinnamon, nutmeg, and salt. Mix well.
  3. In another bowl, break up the eggs with a whisk; then whisk in the milk and vanilla until well combined. Add the milk mixture to the oat mixture, along with the melted butter.
  4. Scatter 2 cups of the blueberries evenly over the bottom of the prepared baking dish. Pour the oatmeal mixture over top and spread evenly. Sprinkle the remaining ¾ cup nuts and ½ cup blueberries on top. Bake for 45 to 55 minutes, until the pecans on top are a rich brown color and the oats are set. Let cool for at least 5 minutes, then serve warm or at room temperature with Greek yogurt, if desired.
  5. Freezer-Friendly Instructions: This dish can be frozen after baking, tightly covered, for up to 3 months. When you’re ready to serve it, defrost in the refrigerator for 24 hours then reheat it, covered with foil, in a 325°F oven until hot.

Nutrition Information

Powered by Edamam

  • Per serving (8 servings)
  • Calories: 331
  • Fat: 19 g
  • Saturated fat: 5 g
  • Carbohydrates: 37 g
  • Sugar: 20 g
  • Fiber: 5 g
  • Protein: 8 g
  • Sodium: 235 mg
  • Cholesterol: 63 mg

This website is written and produced for informational purposes only. I am not a certified nutritionist and the nutritional data on this site has not been evaluated or approved by a nutritionist or the Food and Drug Administration. Nutritional information is offered as a courtesy and should not be construed as a guarantee. The data is calculated through an online nutritional calculator, Edamam.com. Although I do my best to provide accurate nutritional information, these figures should be considered estimates only. Varying factors such as product types or brands purchased, natural fluctuations in fresh produce, and the way ingredients are processed change the effective nutritional information in any given recipe. Furthermore, different online calculators provide different results depending on their own nutrition fact sources and algorithms. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator.

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Comments

  • Excellent And so easy – made twice. Have made the Amish Apple bake many times!
    Love your site and instructions are easy to follow.

    • — Ria on October 10, 2024
    • Reply
  • This is not a good recipe. Soggy bottom, all around did not bake well.

    • — Cap B on August 25, 2024
    • Reply
  • Can I replace the Old fashioned oats with quick cook GF oats?

    • — Lynette Tellez-Morales on January 30, 2024
    • Reply
    • Hi Lynette, I find the texture better with old-fashioned oats but quick cooking oats will work.

      • — Jenn on January 30, 2024
      • Reply
  • Could I make this the night before and cook the next morning?

    Thanks!

    • — Vanessa on December 5, 2023
    • Reply
    • Yep – enjoy!

      • — Jenn on December 6, 2023
      • Reply
    • This is a delicious recipe. Followed the recipe exactly as written. It’s delicious and filling, something I could even eat as a dessert. I love it cold or room temp. Thanks for another great recipe.

      • — Mary on September 3, 2024
      • Reply

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