Cut dough into 8 equal pieces. Cover 7 pieces with plastic wrap and pat out remaining piece into a flat rectangle. Generously dust with flour.

Set rollers of pasta maker on widest setting. Feed rectangle, a short side first, through rollers. Fold rectangle in thirds, like a letter, and feed it, a short side first, through rollers. Repeat 6 or 7 more times, folding dough in thirds and feeding it through rollers, a short side first each time, dusting with flour to prevent sticking. Turn dial to next (narrower) setting and feed dough through rollers without folding, a short side first. Continue to feed dough through without folding, making space between rollers narrower each time, until the second to narrowest setting is used. (Do not roll too thin or pasta will tear when filled.)

Put sheet of dough on a lightly floured kitchen towel (not terry cloth) with a long side nearest you. Drop 5 or 6 rounded teaspoon-size mounds of filling 1 1/2 inches apart in a row down center of right half of sheet, then lift left half of sheet and drape over mounds. Press down firmly but gently around each mound, forcing out air. (Air pockets increase the chance that ravioli will break during cooking.) Cut pasta (between mounds) with a sharp knife into roughly 2 1/2-inch squares. Line a large shallow baking pan with a clean dry kitchen towel (not terry cloth), then arrange ravioli in 1 layer in it. Make more ravioli with remaining pieces of dough and remaining filling in same manner, transferring to lined pan.