This is more named for the ingredients than really it being "Mashed Broccoli"...
I've been making a recipe that I found on the back of a bottle of Ranch dressing for the past couple of years, and the family really likes it. It's called Ranch Baked Chicken. The recipe is really simple.
The result was the most delicious thing I've had all year (and it's only the 4th).
I'm lucky that Eileen works for Friendly's, so I get their frozen broccoli and it's awesome.
* Eileen doesn't work for Friendly's any more :(