Base Ingredients:

• 1 ¾ cups all-purpose flour, spooned and leveled
• ¾ cup granulated sugar
• 1 tablespoon ground cinnamon
• 1 ½ teaspoons baking powder
• ¼ teaspoon baking soda
• ½ teaspoon kosher salt

Wet Ingredients:

• ¾ cup buttermilk, room temperature
• ⅓ cup unsalted butter, melted and slightly cooled
• 2 large eggs, room temperature
• 1 ½ teaspoons vanilla extract
• ¼ cup plain Greek yogurt

Cinnamon Sugar Topping:

• 2 tablespoons granulated sugar
• 1 teaspoon ground cinnamon
• 1 tablespoon unsalted butter, melted

Optional Add-Ins:

• ½ teaspoon ground nutmeg
• ¼ cup chopped toasted pecans or walnuts
• Swirl: 2 tbsp brown sugar + ½ tsp cinnamon