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Apple Cinnamon Streusel Muffins

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Warm, tender muffins studded with soft apple pieces and topped with a crunchy cinnamon-oat streusel.

Ingredients

Scale
  • 2 cups all-purpose flour
  • 3/4 cup granulated sugar
  • 1 tbsp baking powder
  • 1 tsp ground cinnamon (muffin batter)
  • 1/2 tsp salt
  • 1/2 cup unsalted butter, melted (cool slightly)
  • 1 cup milk (whole or 2% gives best richness)
  • 2 large eggs
  • 1 tsp vanilla extract
  • 1 medium apple, peeled and chopped (Granny Smith, Honeycrisp, or Fuji work well)
  • Streusel topping:
  • 1/2 cup brown sugar, packed
  • 1/2 cup rolled oats
  • 1 tsp ground cinnamon (streusel)

Instructions

  1. Preheat oven to 350°F (175°C) and line a 12-cup muffin tin with paper liners or grease the cups.
  2. Whisk together flour, sugar, baking powder, cinnamon, and salt until evenly combined.
  3. Whisk the melted butter, milk, eggs, and vanilla until slightly frothy.
  4. Pour the wet mixture into the dry ingredients and stir just until combined; small lumps are okay.
  5. Fold in the chopped apple gently until distributed.
  6. Combine brown sugar, rolled oats, and cinnamon for the streusel in a small bowl.
  7. Fill each muffin cup about two-thirds full with batter and sprinkle streusel over each.
  8. Bake for 18–20 minutes until a toothpick comes out clean or with a few moist crumbs.
  9. Let muffins cool in the pan for 5 minutes, then transfer to a rack. Serve warm or at room temperature.

Notes

For dairy-free, substitute coconut oil for butter and use your favorite plant milk. For a nuttier flavor, swap half the all-purpose flour for whole wheat.