The Kitchn: Treat your family to a batch of cozy apple muffins
2 1/2 cups all-purpose flour
1/2 cup plus 4 teaspoons granulated sugar, divided
2 teaspoons baking powder
4 teaspoons ground cinnamon, divided
1/2 teaspoon kosher salt
1 1/4 cups whole or 2% milk
1/2 cup neutral oil, such as canola or grapeseed
1 large egg
1 teaspoon vanilla extract
2 medium tart apples (about 12 ounces total), such as Granny Smith or Honeycrisp
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