Having just discussed brown rice, it is only natural to add in one of the most popular vegetables around. Many adults simply do not enjoy vegetables, but broccoli is a tasty option. One cup of boiled or steamed broccoli contains more than five grams of lean fiber with each serving, for very few calories. If you were to add a serving of broccoli to a serving of brown rice and legumes, you can easily have a meal that contains more than 25 grams of fiber. You can add broccoli to salads, as a side dish to your dinner, and even eat it raw with hummus with your snack.