At last, lasagna for the cook who never learned to boil water or who thinks "Al Dente" was the last Yankee lefthander to win 20 games. Pasta Presto Inc., of Spokane, Wash., has introduced an instant lasagna that "eliminates the unpopular and potentially dangerous step of boiling pasta."

No more hurling spaghetti at the refrigerator to see if it is done. Just take out some Pasta Presto, pour tomato sauce on it, and put it in the oven. Before your child can say "mama mia works till eight," dinner is ready.

The pasta, 10 years in development will be available in the United States next summer. Science marches on.