1. 1. In a large bowl, combine the bread flour, yeast, sugar, and kosher salt. Add the warm water and 4 tablespoon of olive oil, then mix until a sticky dough forms.

2. 2. Cover the bowl and let the dough rise in a warm place for 1-1½ hours, or until it has doubled in size.

3. 3. Grease a 9×13-inch baking pan with the remaining 2 tablespoon of olive oil. Gently transfer the dough to the pan and stretch it to fill the space.

4. 4. Cover the dough and let it rise for another 30-45 minutes, until it becomes puffy and expanded.

5. 5. Spoon the apple butter or spread evenly over the surface of the dough. Sprinkle the ground cinnamon over the top, then use your fingers to dimple the dough, gently swirling the apple mixture into the surface.

6. 6. Preheat your oven to 425°F. Sprinkle the flake salt over the dough and bake for 25-30 minutes, until the focaccia is golden brown and irresistibly fragrant.

7. 7. In a small bowl, whisk together the confectioner’s sugar and apple cider (or juice) until smooth and pourable.

8. 8. Drizzle the sweet glaze over the warm focaccia, allowing it to set slightly before slicing and serving.