I adapted this from a recipe for cauliflower and tomatoes. It can also be done on a foil-lined baking sheet if you don't have a large enough skillet.
olive oil, extra virgin
salt and pepper, to taste
1Break broccoli and cauliflower into large florets
Core and cut tomatoes into quarters
2Heat a large skillet over medium heat
Add the oil and herbs to skillet, and heat briefly
3Put veggies in large bowl, pour oil mixture over and toss to coat thoroughly
Pour into skillet, scraping all the oil out of the bowl with a spatula
4Bake at 450* for 15 minutes. Give a stir.
Lower temp to 375* and cook for about 10-15 more minutes until fork tender.
Sprinkle with salt and pepper to taste.