'to the oven', meaning 'baked') is food that has been baked in an oven. Italian dishes commonly prepared in this way include pizza, breads and pasta dishes, notably lasagna. Pasta al forno. Pasta is sometimes boiled before it is baked in al forno dishes.

I learned that "al forno" is Italian for "from the oven," and that recipes for oven-baked pastas hark back to the Middle Ages, when ovens were wood-fired and usually communal, and villagers carried uncooked casseroles to town squares to be baked side-by-side with those of their neighbors.