I'm a big fan of stuffed vegetables. They're usually a meal unto themselves with meat, a starch and a veggie all rolled into ...

Heat oven to 425°F. Coat large rimmed baking sheet with cooking spray. In bowl, toss peppers and onion with rosemary, 1 Tbsp. oil, 1/4 tsp. salt, and 1/4 tsp. pepper. Spread in single layer over ...