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Easy Zesty Lemon Blueberry Baked Oatmeal

easy zesty lemon blueberry baked oatmeal - featured image

A bright and fresh baked oatmeal combining zesty lemon and juicy blueberries for a healthy, comforting breakfast that’s quick and easy to prepare.

Ingredients

Scale
  • 2 cups (180g) rolled oats, old-fashioned
  • 1 ½ teaspoons baking powder
  • ½ teaspoon salt
  • ½ teaspoon ground cinnamon (optional but recommended)
  • 2 large eggs, room temperature
  • 1 ½ cups (360ml) milk, any kind (dairy or plant-based)
  • ½ cup (125g) plain Greek yogurt (can substitute coconut yogurt for dairy-free)
  • ¼ cup (85g) honey or maple syrup, adjust to taste
  • Zest of 2 medium lemons (about 2 tablespoons)
  • 3 tablespoons fresh lemon juice
  • 1 teaspoon vanilla extract
  • 1 ½ cups (225g) fresh or frozen blueberries
  • Optional toppings: sliced almonds, chopped walnuts, or shredded coconut

Instructions

  1. Preheat the oven to 350°F (175°C) and lightly grease a 9×9-inch baking dish with butter or nonstick spray.
  2. In a large bowl, whisk together rolled oats, baking powder, salt, and ground cinnamon until evenly combined.
  3. In a medium bowl, beat eggs with milk, Greek yogurt, honey or maple syrup, lemon zest, lemon juice, and vanilla extract until smooth.
  4. Pour the wet mixture over the dry ingredients and gently stir with a rubber spatula until just combined; the batter will be thick but pourable.
  5. Fold in the blueberries gently, being careful not to crush them. If using frozen, no need to thaw.
  6. Pour the batter into the prepared baking dish and spread evenly. Optionally, sprinkle sliced almonds or chopped nuts on top.
  7. Bake for 35-40 minutes until the top is golden and set, and a toothpick inserted in the center comes out mostly clean with some moist crumbs.
  8. Let the baked oatmeal cool for about 10 minutes before slicing to help it firm up for easier serving.

Notes

Do not overmix the batter to keep the texture light and fluffy. Use fresh lemon zest for best flavor. Frozen blueberries can be added directly without thawing to prevent color bleeding. Let the baked oatmeal cool before slicing for cleaner pieces. If edges brown too quickly, tent with foil halfway through baking. For vegan adaptation, use flax eggs and plant-based milk and yogurt.

Nutrition

Keywords: baked oatmeal, lemon blueberry oatmeal, healthy breakfast, easy breakfast, baked oats, lemon zest, blueberry recipe, gluten-free breakfast