5 So A McDonald’s Angus Cheddar Bacon Onion (CBO) is 790 calories. It has loads of saturated fat, and for me, it’s over half of my […] A McDonalds Cheddar Bacon Onion Angus contains 790 calories2012-11-10 in Illustration / portfolio tagged Calorie / cooking / Home / Inkscape / John LeMasney / McDonald by lemsy (updated 1625 days ago)