If using beyond sausage, crumble sausage into bite-sized pieces. Follow same instructions as Italian sausage in Step 3, cooking sausage, stirring often and breaking up with a spoon, until warmed through, 6-8 minutes. Vegetarian sausage will not brown.
If using 16 oz Italian sausage, follow same instructions, cooking in batches if necessary.
If using bacon, line a plate with a paper towel. Follow same instructions as sausage in step 3, first adding bacon to hot, dry pan. Flip occasionally until crisp, 6-8 minutes. Transfer to towel-lined plate to remove excess oil. If desired, drain oil from pan before cooking sausage. Crumble over pasta.