Step 1

Preheat the oven to 400 degrees F (200 degrees C). Spray a loaf pan with nonstick spray.

Step 2

Combine self-rising flour, sparkling cider, oat flour, sugar, cinnamon, and baking powder in a large bowl; mix well. Pour batter into the prepared loaf pan. Mix sugar and cinnamon in a small bowl and sprinkle over the top.

Step 3

Reduce the oven temperature to 375 degrees F (190 degrees C). Bake the loaf in the preheated oven for 35 minutes.

Step 4

Remove the loaf and pour melted butter on top. Continue baking for 20 minutes. Cool before slicing.