These spiced apple muffins are a delightful treat, featuring a tender crumb and a crunchy streusel topping.
Preheat your oven to 375°F (190°C) and grease a muffin tin or line it with paper liners.
Using paper liners makes cleanup easier and gives the muffins a professional look.
In a large mixing bowl, combine the flour, sugar, cinnamon, nutmeg, and baking powder.
Sifting the dry ingredients ensures a smoother batter.
In another bowl, whisk together the egg, buttermilk, and vanilla extract.
Make sure the wet ingredients are at room temperature for better mixing.
Melt the butter and let it cool slightly before adding it to the wet ingredients.
Cooling the butter prevents it from cooking the egg.
Peel, core, and finely chop the apple, then fold it into the wet mixture.
Chopping the apple finely ensures even distribution in the muffins.
Gradually add the wet ingredients to the dry ingredients, mixing until just combined.
Avoid overmixing to keep the muffins tender.
In a small bowl, mix together the brown sugar, flour, and cold butter for the streusel topping until crumbly.
Use your fingers to achieve a crumbly texture for the topping.
Fill the muffin tin two-thirds full with the batter and sprinkle the streusel topping evenly over each muffin.
Use an ice cream scoop for evenly sized muffins.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
Rotate the muffin tin halfway through baking for even cooking.
Let the muffins cool in the tin for 5 minutes before transferring them to a wire rack to cool completely.
Cooling the muffins helps them set and makes them easier to remove from the tin.