Blackberry Baked Oatmeal

This baked oatmeal is sweetened with real maple syrup and dotted with fresh blackberries for a cozy, make-ahead breakfast dish actually keeps you full and ready for the day.

Square of baked oatmeal topped with vanilla yogurt and fresh blackberries.

I was late to the baked oatmeal party but once I tried it, there was no going back. This blackberry baked oatmeal is a favorite around here, but one of the best things about baked oats is how customizable they are. Think of this recipe as your solid, reliable base with lots of room to play.

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Why This Recipe Works

  • This baked oatmeal is bursting with fresh, juicy blackberries for a fruity flavor
  • This maple sweetened baked oatmeal is made without refined sugar
  • It's a great variation to traditional oatmeal in a bowl (and more filling) and can be made ahead of time and reheated throughout the week.

Ingredient Notes

Here's a few tips on some of the ingredients of this recipe. For full measurements, see the recipe card below:

  • Old-fashioned oats - Quick-cooking oats will result in a soggy oatmeal. Steel cut oats won't break down correctly. Look for specifically labeled gluten-free oats if needed.
  • Maple syrup - Please use the real stuff. Used as the sweetener instead of sugar.
  • Milk - whatever kind you have on hand. Non-dairy versions like almond, soy or oat milk can be used interchangeably
  • Melted butter - provides flavor and richness to the baked oatmeal. You can substitute melted coconut oil for a dairy-free sub
  • Blackberries - use fresh berries, not frozen. Substitute raspberries, blueberries or a combo.

Quick Tip: If your blackberries are extra large, cut them in half so they distribute more evenly throughout the baked oatmeal.

How to Make Blackberry Baked Oatmeal

This recipe comes together quickly, no mixer required.

Step 1: Combine oats and dry ingredients in a large bowl.

Step 2: In a separate bowl combine all the wet ingredients.

Step 3: Add the dry ingredients to the wet and stir until no dry spots are left.

Step 4: Fold gently fold 1 cup of blackberries (about 1 - 6 oz. clamshell) into the oat mixture. Place batter in a greased 8x8 baking dish. Top with more blackberries.

For extra texture, add some chopped walnuts or pecans (about ½ cup) to the batter.

Clamshell of fresh blackberries being dumped into baked oatmeal batter in a glass bowl.
Hand placing fresh blackberries on top of oatmeal in white baking dish before baking.

Step 5: Bake at 350 degrees for 40-45 minutes until the middle is set and the top is golden brown.

Let the blackberry baked oatmeal cool for about 10 minutes before slicing to allow it to set. This will help you cut it into squares without it falling apart.

Baked blackberry oatmeal in a white square baking dish on a wooden board.

How to Serve Blackberry Baked Oatmeal

Cut baked oatmeal into 9 squares and serve with maple syrup, Greek yogurt or extra berries. I'd compare the texture of the oatmeal to a bread pudding, not too dry and not too mushy.

Serve it on its own or pair it with fresh fruit, eggs, or breakfast sausage (or bacon) for a more filling meal.

Flat spatula lifting a square of baked oatmeal out of white baking dish.

Storage & Reheating Tips

One of the best things about baked oatmeal? It keeps beautifully making it great for meal prep. Perfect for busy mornings!

Refrigerator:
Store leftovers in an airtight container for up to 5 days.

Freezer:
Freeze baked oatmeal squares for up to 3 months. Thaw overnight in the fridge before reheating.

Reheating:
Microwave individual portions in 30-second intervals until warmed through.

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FAQ

Why is my baked oatmeal gummy or mushy?

Gummy baked oatmeal usually comes from using quick oats instead of old-fashioned oats, overmixing the batter, or adding too much fruit. Stick with rolled oats and gently fold everything together for the best texture.

How do I know when blackberry baked oatmeal is done?

To tell if the baked oatmeal is done, give the pan a wiggle. The center should be set and not jiggle. A toothpick stuck in the middle should also come out clean.

Can I use frozen blackberries instead of fresh?

Fresh blackberries work best for blackberry baked oatmeal since frozen berries release extra liquid.

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📖Recipe

📖 Recipe

Square of baked oatmeal topped with vanilla yogurt and fresh blackberries.
Ashley Leonard

Blackberry Baked Oatmeal

No ratings yet
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings: 9 servings
Course: Baked Goods, Breakfast
Cuisine: American

Ingredients
  

  • 2 cups old-fashioned oats
  • 1 tsp. baking powder
  • 1 tsp. cinnamon
  • ½ tsp. salt
  • 2 cups milk
  • cup real maple syrup
  • ¼ cup butter melted
  • 2 eggs
  • 1 tsp. vanilla extract
  • 1 ½ cups blackberries divided

Method
 

  1. Preheat oven to 350 degrees. Lightly grease an 8x8 baking pan.
  2. In a bowl combine oats, baking powder, salt and cinnamon.
    2 cups old-fashioned oats, 1 tsp. baking powder, ½ tsp. salt, 1 tsp. cinnamon
  3. Add milk, syrup, butter, eggs and vanilla. Mix until just combined.
    2 cups milk, ⅓ cup real maple syrup, ¼ cup butter, 2 eggs, 1 tsp. vanilla extract
  4. Gently fold in 1 cup of blackberries. Pour batter into greased pan. Sprinkle top with remaining berries.
    1 ½ cups blackberries
  5. Bake for 40-45 minutes until the center is set and top is lightly golden. Let sit 10 minutes before serving.

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