Ingredients
Equipment
Method
Preheat and prep
- Preheat the oven to 425 F (220 C) and line a 12-cup muffin tin with paper liners.
Make the crumb topping
- Mix the crumb flour, brown sugar, cinnamon, and melted butter with a fork until crumbly.
Mix the dry ingredients
- Whisk the flour, baking powder, baking soda, salt, and cinnamon until evenly combined.
Mix the wet ingredients
- Whisk the melted butter, both sugars, eggs, sour cream or plain Greek yogurt, milk, and vanilla until smooth.
Combine batter
- Fold the dry ingredients into the wet ingredients until just combined.
Add apples
- Fold in the diced apples until evenly distributed.
Fill and top
- Fill the liners almost to the top and sprinkle with the crumb topping.
Bake two-stage for tall muffins
- Bake for 5 minutes at 425 F (220 C), until the tops start to rise.
- Lower the oven to 350 F (175 C) and bake for 15 to 18 minutes more, until a toothpick comes out clean.
Cool
- Cool in the pan for 5 minutes, then move to a wire rack.
Notes
For the best crumb texture, use cold or room-temperature melted butter (so the crumbs stay sandy) and avoid overmixing after adding the apples—stop as soon as the dry streaks disappear. Store muffins in an airtight container at room temperature for up to 3 days or refrigerate for up to 5 days; freeze up to 2 months. For a lighter option, swap half the sour cream/Greek yogurt for the same amount of low-fat plain Greek yogurt.
