Preheat your oven to 400°F (200°C) and grease a loaf pan lightly with butter or non-stick spray.

In a large bowl, whisk together 2 cups flour, 1 tablespoon baking powder, 1 teaspoon salt, and 1 teaspoon garlic powder until combined.

Cut ½ cup of cold butter into small cubes and blend it with the dry ingredients until it resembles coarse crumbs.

In another bowl, mix 1 cup buttermilk, 1 cup shredded cheddar cheese, and ¼ cup chopped parsley until fully combined.

Fold the wet ingredients into the dry mixture until just incorporated, being careful not to overmix.

Pour the batter into the prepared loaf pan, smoothing the top, and sprinkle extra cheese and parsley if desired.

Bake for 30-45 minutes until the top is golden brown and a toothpick comes out clean.

Remove from the oven, cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.