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Easy and Fluffy Blueberry Oatmeal Muffins

A single, golden-brown blueberry oatmeal muffin with a sugary crumb topping, sitting on a small white plate.

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Make soft, tender blueberry oatmeal muffins that are simple to prepare and perfect for a wholesome breakfast or snack.

Ingredients

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  • 1 3/4 cups all-purpose flour
  • 1 cup rolled oats (not instant)
  • 3/4 cup granulated sugar
  • 2 teaspoons baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 large egg, lightly beaten
  • 1/2 cup milk
  • 1/4 cup vegetable oil
  • 1 teaspoon vanilla extract
  • 1 cup fresh or frozen blueberries

Instructions

  1. Preheat your oven to 400 degrees F (200 degrees C). Line a 12-cup muffin tin with paper liners or grease well.
  2. In a large bowl, whisk together the flour, oats, sugar, baking powder, baking soda, and salt.
  3. In a separate medium bowl, mix the egg, milk, oil, and vanilla extract.
  4. Pour the wet ingredients into the dry ingredients. Mix gently until just combined. Do not overmix; a few lumps are fine.
  5. Gently fold in the blueberries.
  6. Divide the batter evenly among the 12 muffin cups, filling each about two-thirds full.
  7. Bake for 18 to 20 minutes, or until a toothpick inserted into the center comes out clean.
  8. Let the muffins cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.

Notes

  • For extra moisture, use buttermilk instead of regular milk.
  • If using frozen blueberries, do not thaw them; toss them with one teaspoon of flour before adding them to the batter to prevent sinking.
  • These muffins stay moist for up to three days when stored in an airtight container at room temperature.

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