A Complete Collection of Nutritious Lunch Recipes Lunch is an important meal among three meals a day and plays an important role in maintaining health and increasing energy. A nutritionally balanced lunch includes foods from the five major food groups: vegetables, fruits, grains, protein and healthy fats. Here are a few nutritious lunch recipes to help you eat healthy and delicious every day. Protein-Rich Lunch Protein is an important part of a healthy diet as it is the building block of our body. Here are two protein-rich foods: