I'll post the two ways to eat low-fat to get a clear idea, but I eat a combination of both. The
http://30bananasaday.com
site recommends eat the raw 80-10-10 as your primary "Gold medal" diet and the Starch Solution way as your backup "Silver medal" diet.
# Raw vegan high-carb/low-fat version (Dr. Graham's 80-10-10):
- mostly sweet fruits (bananas, dates, mangoes, oranges, ect)
- moderate medium sweet fruits (apples, pears, berries, ect)
- moderate tender/salad greens (romaine, iceberg, butter leaf, etc) and non-sweet fruits (tomatoes, celery, cucumber, etc)
- low in overt plant fats (nuts, seeds, avocados, olives, etc)
- avoid leafy greens (kale, spinach, etc), root veggies (carrots, beets, etc), cruciferous veggies (broccoli, cauliflower, etc), and sulfur veggies (garlic, onions, etc) because are said to be harder to digest raw and for other reasons like high in oxalic acid, but are OK to eat cooked if you're not strictly eating raw.
# Cooked high-carb/low-fat version (Dr. McDougall's Starch Solution):
- mostly grains (rice, wheat, etc) or tubers (potatoes, yams)
- moderate in any veggies or fruits
- low in overt plant fats and animal products
The cooked way is basically like the US Pyramid diet, except eat even less of the meats, dairy, and oils sections because those are all high in fat and of course avoid all processed foods. Starch Solution also recommends a calorie ratio of 80-10-10 (80% carbs, 10% protein, 10% fats).
I personally eat mostly fruits all day and either a large salad or cooked Starch Solution style in the evening. If I feel like I need to eat something late at night, I'll eat fruit because it's easiest to digest and less likely to not interfere with sleep as a heavier meal would.
Remember
DO NOT CALORIE RESTRICT. That's the biggest mistake people run into on a plant-based diet, not eating enough. The second biggest mistake is eating too much overt fats, like nut butters, avocado and humus dips, olive oil and the third biggest mistake is eating too much processed plant-based foods, like breads, soy burgers, organic chips, flax crackers, and soy deserts.