Ingredients
Equipment
Method
Prep and bake
- Preheat the oven to 375°F and line a 12-cup muffin tin with paper liners.
- For streusel, mix the flour, brown sugar, and cinnamon, then cut in the cold butter with a fork until crumbly.
- Refrigerate the streusel while you prepare the batter.
- Whisk the all-purpose flour, baking soda, baking powder, cinnamon, nutmeg, and salt until evenly combined.
- Whisk the melted butter, granulated sugar, eggs, sour cream, whole milk, and vanilla extract until smooth.
- Fold the dry flour mixture into the wet ingredients until just combined, then fold in the diced apples.
- Divide the batter evenly among the muffin cups and top each generously with the chilled streusel.
- Bake for 20-22 minutes, until a toothpick inserted in the center comes out clean and the tops are golden.
- Cool in the pan for 5 minutes, then transfer the muffins to a rack to finish cooling.
Notes
For the crispiest streusel, keep the butter cold and refrigerate the streusel until the oven is ready. Store muffins in an airtight container at room temperature for up to 2 days or in the fridge for up to 5 days; freeze up to 2 months. For a lighter batter, swap whole milk for 2% milk (texture stays tender, flavor slightly less rich).
