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Hearty and Moist Oatmeal Muffins with Cinnamon Streusel

A close-up of one oatmeal muffin broken open, showing the moist interior and crumbly streusel topping, with another muffin behind it.

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Make these simple, hearty oatmeal muffins for a wholesome breakfast or snack. This recipe focuses on creating moist texture and includes a simple cinnamon streusel topping.

Ingredients

Scale
  • 1 1/2 cups all-purpose flour
  • 1 cup rolled oats
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1 teaspoon ground cinnamon
  • 1/2 cup packed brown sugar
  • 1/4 cup granulated sugar
  • 1 large egg
  • 1/2 cup milk
  • 1/2 cup unsweetened applesauce
  • 1/4 cup melted unsalted butter
  • 1 teaspoon vanilla extract
  • For Streusel: 1/4 cup flour, 2 tablespoons brown sugar, 1/2 teaspoon cinnamon, 1 tablespoon cold butter (cut into pieces)

Instructions

  1. Preheat your oven to 400 degrees Fahrenheit. Line a 12-cup muffin tin with paper liners or grease it well.
  2. In a large bowl, whisk together the flour, rolled oats, baking soda, baking powder, salt, and 1 teaspoon of cinnamon.
  3. In a separate medium bowl, whisk together the brown sugar, granulated sugar, egg, milk, applesauce, melted butter, and vanilla extract until combined.
  4. Pour the wet ingredients into the dry ingredients. Mix gently with a spatula only until just combined. Do not overmix; a few lumps are fine.
  5. Prepare the streusel: In a small bowl, combine the streusel flour, brown sugar, and cinnamon. Cut in the cold butter using your fingers or a pastry blender until the mixture resembles coarse crumbs.
  6. Divide the batter evenly among the 12 muffin cups, filling each about two-thirds full.
  7. Sprinkle the cinnamon streusel topping evenly over the top of the batter in each cup.
  8. Bake for 18 to 20 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
  9. Let the oatmeal muffins cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.

Notes

  • For extra moisture, you can substitute the milk with buttermilk.
  • You can add 1/2 cup of chocolate chips or raisins to the batter for variation.
  • If you prefer a less sweet muffin, reduce the total sugar by 2 tablespoons.

Nutrition