Preheat the oven to 350°F. Grease a 9x5-inch loaf pan and line it with parchment paper.

In a medium bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and nutmeg.

In a large bowl, beat the softened butter and sugar until light and fluffy. Add the eggs one at a time, mixing well after each addition, then mix in the vanilla extract.

Add half of the dry ingredients to the butter mixture and mix just until mostly combined. Add the apple cider and Greek yogurt and mix gently. Add the remaining dry ingredients and stir just until no dry streaks remain.

Spread the batter into the prepared loaf pan and smooth the top.

Bake for 50 to 55 minutes, or until the loaf is golden brown and a tester inserted in the center comes out clean or with a few moist crumbs.

Cool the bread in the pan for 10 minutes, then lift it out and place it on a wire rack while still warm.

In a small bowl, stir together the granulated sugar and cinnamon for the coating.

Brush the warm loaf all over with melted butter.

Sprinkle and gently press the cinnamon sugar over the top and sides of the loaf. Let cool slightly before slicing and serving.