Some nutrient-dense foods (From Harvard University)

Info source: 

http://www.health.harvard.edu/healthbeat/are-you-getting-essential-nutrients-from-your-diet

Some nutrient-dense foods

Avocados

Chard, collard greens, kale, mustard greens, spinach

Bell peppers

Brussels sprouts

Mushrooms (crimini and shiitake)

Potatoes (white or sweet)

Cantaloupe, papaya, raspberries, strawberries

Yogurt

Eggs

Seeds (flax, pumpkin, sesame, sunflower)

Beans (garbanzo, kidney, navy, pinto)

Lentils

Peas

Almonds, cashews, peanuts

Barley, oats, quinoa, brown rice

Salmon, halibut, cod, scallops, shrimp, tuna

Lean beef, lamb, venison

Chicken, turkey