Could source some hemp seeds, great for fats and proteins, although protein is over-rated!
Grains are next otherwise, load up on oats (cheap!), quinoa and etc, protein can help make up for calories.
Look at sweet fruits, dates and bananas are quite high in sugar (dates ~80%) but have some research baking their efficacy.
What about sesame seeds or sunflower seeds? Buckwheat groats? All of which easy to prepare,
Sesame seeds can be purchased as 'tahini' which is a peanut butter like spread, super healthy.
Beans too in particular chickpeads (garlbanzo beans) which is the main ingredient to hummus (soo tasty!).
Loads of options, as a lady 2000 calories a day is pretty standard avg, if your active look at getting 2,500 calories.
If you want to be 'right on' the nutritional input you can download Cron-o-meter which is a program that can track your nutritional progress and it is easy to use.
Daily try to get a serving of grains (porridge, vita-brix, buckwheat porridge) with berries, fresh fruit is a good option, through some cinnamon or nutmeg on top. Yum!
5-9 servings of fresh fruit and vege (9 servings is the USDA daily minimum now!)
1 tomato = 1 serving. And be sure to aim for dark green leafies like purple kale (Mild taste compared to green kale), broccoli, red cabbage and etc!
Hand full of fats (try to do whole food fats like the seeds aforementioned, otherwise you can look at an omega-3 supplement which is vegan and algae-based (the brand Deva does a great one, one can order it from iherb.com).
Drink loads of herbal tea like Hibiscus, rosehip or green teas ( green tea does inhibit iron intake, so try to add citrus to your iron meals e.g Orange Juice when eating your salad! Or lemon dressing (favorite when blended with tahini!) (more of a concern for women due to menstruation)). Check out nutritional yeast also, as nuts a good source of b-vitamins, so are dates but the yeast is cheap and potent... kind of tastes like cheese! there are vegan chese recipes for the yeast too.