Step #3 place balsamic in a pan cook at med heat untill it reduces to a syrup.
Step #4 chopp asparagus in about 1 inch pices place this in frying pan with red onion & a bit of the oil & a bit of water cover alow to stream untill asparagus changes dark green & onion is cooked.
Step #5 drain pasta.
Step #6 top this with asparagus & red onion then drizzel balsamic over & top this with lots of parm.
Step #7 add salt peper to taste.
Enjoy the Pasta With Asparagus & Balsamic Reduction recipe