Heat olive oil in a large, deep skillet over medium heat. Add onion and cook 3-5 minutes or until soft and translucent. Stir in broccoli and cauliflower.
Turn vegetables a few times to coat with the olive oil. Sprinkle in oregano and salt. Cover, and cook 7-8 minutes, stirring frequently. Vegetables should be slightly browned and crisp tender when ready to serve.
Yield: 8 servings (serving size: 1 cup)