01 -
In a large mixing bowl, combine bread flour, fine sea salt, and instant yeast. Stir in the warm water and olive oil until a sticky dough forms.
02 -
Transfer the dough to a well-oiled bowl, cover, and let it rise in a warm place until doubled in size, about 60 to 90 minutes.
03 -
In a small bowl, combine brown sugar and ground cinnamon for the filling; set aside.
04 -
Generously oil a 23x33 cm baking pan. Turn the risen dough out onto the pan and gently stretch it to reach all corners.
05 -
Drizzle melted butter for the filling over the dough. Sprinkle evenly with the brown sugar-cinnamon mixture.
06 -
Using your fingers, dimple the dough deeply, creating pockets for the filling and swirling to marble the cinnamon mixture throughout.
07 -
Cover the pan loosely and let the dough rise for an additional 30 to 45 minutes, until puffy and bubbly.
08 -
Preheat the oven to 200°C.
09 -
Brush the top of the dough with the melted butter for topping. Mix granulated sugar and cinnamon for the topping, then sprinkle evenly over the surface.
10 -
Bake on the center rack for 22 to 25 minutes, or until golden brown and bubbling.
11 -
Remove from the oven and allow to cool slightly in the pan.
12 -
Whisk together powdered sugar, whole milk, vanilla extract, and a pinch of salt until smooth. Drizzle glaze generously over the warm focaccia.
13 -
Cut into portions and serve warm or at room temperature.