Add the pasta to the boiling water. Set timer to cook 1 minute pastal dente (reference package directions for cook time).
When there is 1 minute left for the pasta to cook, add the broccoli florets to the boiling water with the cooking pasta.
Drain the pasta and broccoli and rinse with cool water to stop the cooking. Drain well.
Make the pesto salad dressing
In a bowl, whisk together the ingredients for the pesto salad dressing.
Assemble the salad
In an extra large bowl or hotel pan, toss together the pasta, broccoli, bell pepper, tomatoes, onion, and pesto salad dressing.
Cover tightly with plastic wrap and refrigerate until serving.
Notes
As written, this recipe makes 25 servings as a side salad. If serving as a main dish, this recipe yields 14 servings.One head of broccoli yields 3-4 cups florets and weighs about 9 ounces.If making more servings of this recipe (i.e. with more than 2 pints grape tomatoes), I don't halve the tomatoes. I just leave them whole.Note that the equipment recommendations are just recommendations. Extra-large or commercial-sized equipment is not required for batch cooking.