This is an old fave, and I think I have enough blanket yarn left, so here we go!

Cast on 58 (back), 2x2 rib 10 rows.
72 rows total to shoulder shaping (back).

Cast on 26, 2x2 rib 10 rows.
60 rows to neck shaping (fronts).
7 sts on holder, Dec 1 at neck edge, every other knit row, 3 times, continue to 72 rows, as for back.

Cast on 28, 2x2 rib 10 rows. UnI
Inc to 34, inc evenly (46 tot), length 50 rows total. (sleeve)
Button band, 2/3.
70 stitches for the collar. Short row by 4s to shape.