Steak 'n Shake M&M's Milkshakes contain between 550-790 calories, depending on your choice of option. The option with the fewest calories is the Small/Kids M&M's Milkshake (550 calories), while the Regular M&M's Milkshake contains the most calories (790 calories).
Choose from the options below to see the full nutrition facts, ingredients and allergen information.
