I roast veggies every few days (zucchini,squash, asparagus, bell peppers, onions, tomatoes, etc) and store them in the fridge. Then I add at least a 1/2 cup to frozen pasta meals (ex: WW Ravioli Florentine). It makes them taste tons fresher and adds a serving of veggies!
I use a cookie sheet sprayed with nonstick spray,then add my diced or sliced veggies and drizzle with extra virgin olive oil, salt, and pepper. Bake them in a 400 degree oven for 45-60 minutes , turning them once about 1/2way through