Combine all of the dough ingredients. Mix and knead--by hand, mixer, or bread machine--till smooth, adding additional water or all-purpose flour if needed to produce a soft, slightly sticky dough. Allow the dough to rise for 1 hour, until puffy.
Turn the dough out onto a lightly greased surface and deflate it gently. Place it on a well greased baking pan, either a 12- to 14-inch round pan, or a half sheet pan. Gently stretch and pat the dough to fit the pan. Brush with olive oil or garlic oil and
Bake the focaccia in a preheated 450°F oven for 10 minutes. Remove from the oven, sprinkle with seasoned salt or herbs, and the shredded cheese of your choice, then return to the oven and bake until browned on the bottom and cheese is melted, about 6 to 1