The Dietary Guidelines recommend filling half your plate with fruits and vegetables, and all veggies are important in plant-based diets. A cup of raw broccoli has about 3 grams of protein, 30 calories and 10% of your daily fiber (2.5 grams). It also has potassium, vitamin K, vitamin C and calcium. “I love to roast up broccoli in the oven with a little bit of olive oil and salt, and you can also add raw or steamed broccoli to salads,” says Rizzo.