Ingredients:

  • 1/2 cup all-purpose flour
  • 1/4 cup brown sugar, packed
  • 1/4 tsp ground cinnamon
  • 3 tbsp cold unsalted butter, cubed
  • 2 cups all-purpose flour
  • 3/4 cup granulated sugar
  • 2 tsp baking powder
  • 1 tsp baking soda
  • 1 tbsp ground cinnamon
  • 1/2 tsp salt
  • 1 large egg, room temperature
  • 3/4 cup buttermilk, room temperature
  • 1/2 cup vegetable oil
  • 1 tsp vanilla extract
  • 2 cups peeled and diced Granny Smith apples

Instructions:

  1. Preheat oven to 425°F (220°C) and line a 12-cup muffin tin with paper liners.
  2. Toss diced apples with 1 tablespoon of the measured flour until lightly coated.
  3. In a medium bowl, combine 1/2 cup flour, brown sugar, and 1/4 tsp cinnamon. Use a fork or pastry cutter to work cold butter into the mixture until coarse crumbs form. Set aside in the fridge.
  4. In a large bowl, whisk together 2 cups flour, granulated sugar, baking powder, baking soda, 1 tbsp cinnamon, and salt.
  5. In a separate bowl, whisk together egg, buttermilk, oil, and vanilla extract until emulsified.
  6. Pour wet ingredients into dry ingredients and fold gently with a spatula until just combined.
  7. Gently fold in the floured apple chunks.
  8. Fill each muffin cup to the top, mounding slightly, and sprinkle a generous tablespoon of streusel over each.
  9. Bake at 425°F (220°C) for 5 minutes, then lower oven temperature to 375°F (190°C) without opening the door and bake for another 15 minutes.