Pork Tenderloin Medallions without onion

1 pork tenderloin (cut into 3/4-inch medallions) 2 -3 tablespoons oil (any vegetable oil is fine) 1 medium onion , finely chopped 2 cups sliced fresh[...]

salt 1 lb pappardelle pasta or 1 lb fettuccine 2 pork tenderloin, trimmed (1 1/2-1 3/4 lb, total wt.) black pepper 1/2 cup all-purpose flour 2 tablespoons[...]