Good topic. I eat the same three meals every day, the only exception being work or family events (about 1 or less per month) where there is an implicit social requirement to share a meal with others. I do this because I do not like deviating from my daily routine and I also hate spending money (especially if I know am getting ripped off)
Here is what I eat each day. I am open to suggestions/criticisms. These numbers are based on my most recent grocery bills from Kroger in South Carolina.
Breakfast:
5 Eggs: $0.61, 350cal
1.5 Cups Oatmeal: $0.43, 450cal
1 Banana: $0.18, 110cal
1/7th container of greek yogurt: $0.67, 71cal
1/7th container of cottage cheese: $0.63, 94cal
Lunch:
1.5 Cups Oatmeal: $0.43, 450cal
1 Banana: $0.18, 110cal
1 Egg: $0.12, 70cal
Dinner:
1-2 Chicken Drumsticks: $0.71, 476cal
5/7th lb potatos: $0.53, 256cal
2/7th lb carrots: $0.36, 53cal
1 Avocado: $0.99, 120cal
Spices:
1/36th container of salt: $0.02
1/14th container of cinnamon: $0.25
1/84th container of garlic: $0.06
TOTAL: $6.17 PER DAY = $2,252 PER YEAR. 2610 CALORIES/DAY
I run 6 days a week at about 40 miles per week.