*To Roast Roma Tomatoes: Preheat oven to 425 F. Toss roma tomatoes in a large roasting pan. Drizzle with a bit of olive oil and season with salt and pepper. Toss to coat. Cut a small slit in the top of each tomato. Roast in preheated oven for about 1 hour. Cool, then transfer to a bowl or bag and refrigerate or freeze for later.
Preheat oven to 325 F. Cover focaccia loosely with greased plastic wrap and set pan on top of preheating oven to rise for 30-40 minutes, or until dough has risen slightly above the sides of the pan.
Bake in 325 F. oven until golden brown, about 30 minutes. Cut into square, wedges or slices and enjoy as is or serve with an olive oil/balsamic dip. Freezes well.