Ingredients
Equipment
Method
Mix the muffin batter
- Preheat the oven to 425°F.
- Line a standard 12-cup muffin pan with paper liners.
- Whisk the flour, granulated sugar, baking powder, baking soda, cinnamon, and salt in a large bowl.
- In a medium bowl, whisk the eggs, sour cream, oil, milk, and vanilla until smooth.
- Fold the wet mixture into the dry ingredients just until no dry flour remains; the batter will be thick and lumpy.
Make the streusel
- Mix the flour, brown sugar, cinnamon, and salt in a small bowl.
- Work in the butter with your fingertips or a fork until coarse crumbs form.
Bake the muffins
- Divide the batter evenly among the liners.
- Sprinkle the streusel over the tops.
- Bake for 5 minutes at 425°F, then, without opening the oven, reduce the temperature to 350°F and bake for 13 to 17 minutes more, until the tops are golden and a toothpick inserted in the center comes out with a few moist crumbs.
- Cool the muffins in the pan for 5 minutes.
- Transfer the muffins to a wire rack to cool.
Notes
For tender muffins, fold the batter just until no dry flour remains. Store in an airtight container in the refrigerator for up to 5 days; these muffins freeze well for up to 3 months. For a dairy-free variation, use dairy-free sour cream, milk, and butter.
