Combine the shredded cabbage and carrots in a large bowl.
Whisk together the mayonnaise, onion, sugar, vinegar, mustard, salt, and pepper in a bowl, and then add to the cabbage mixture.
Mix well to combine and taste for seasoning. Chill before serving.
Notes
Nutrition Information Per Serving Calories: 210, Fat 15g, sat. Fat 2.5g, Sodium 323mg (when prepared with ΒΌ t salt)Tips:Make a lighter dressing by replacing some of the mayonnaise with plain yogurt.If you like your cole slaw a little more tart, add more vinegar or lemon juice.