Sponge: In a large bowl, combine together 1 ¾ cups (210g) of flour, all the water, sugar, and yeast. Cover and place in the fridge overnight.
In the morning, combine the sponge with the rest of the flour and 1 ½ tsp salt. Knead until soft and smooth (about 5-7 minutes). Add more flour if needed but limit how much you add. Too much flour will dry out the bread.
Divide the dough into 8 equal pieces and roll them into balls. Place into a greased 8-inch cake pan. Cover and let rise until almost doubled in size (about 45-60 minutes)
Whisk together egg wash and generously brush on the tops of the bread.
Bake in a 425°F preheated oven for 20 minutes or until golden brown. Brush with garlic oil and serve.