The dressing for this can be made up to 5 days in advance.
Broccoli can be made 2 days in advance.
This is a wonderful potluck dish and it makes a lot.
It seems like there is very little dressing but do not worry the tomatoes will add the right amount of liquid.
I have served this salad many times and am always asked what the delicious dressing is made from.
You can sub strawberries for the grapes if you want.
If desired you can add 2 bananas right before serving.
Here is the recipe but don't tell.