Starchy foods such as cereals, pseudocereals and starchy vegetables are on the second level of both the vegan and the "ordinary" food pyramid. You should have 3-4 servings a day. This list here offers just a few suggestions to pick from - of course, there are many more! The serving size depends on what you pick. For instance, one serving may be:
60-75 g raw or 200-250 g boiled rice or other grains
2-3 slices of bread (50 g each)
125-150 g raw pasta
2-3 medium-size potatoes (200-250 g)
50-60 g rolled oats
Try to prefer wholemeal products to white flour products. If you are gluten-intolerant, you may eat gluten-free cereals (rice, corn, millet) as well as pseudocereals (quinoa, amaranth, buckwheat). Starchy vegetables are, of course, okay as well, but consider that they contain much less protein and that some of them may not be very high in minerals and vitamins either.
For some inspiration on vegan breads, please check my list World Bread Day - 100 Breads From Around The World.