I also add a blend of cooked grains to my chop mix. It adds addition nutrition and helps soak up excess moisture. For the latest batch of chop, I mixed together wild rice, brown teff, amaranth, tricolor quinoa, bulgar wheat, 5 grain cereal, and diced almonds. I also threw in some dehydrated veggies. Then I added water according to the directions for the grains and cooked the mix in a pot on the stove top for ten minutes. I let the cooked grains cool over night in the fridge before mixing with the finished chop.
If you want, you could add beans to your chop, but be sure to cook them first.
I try to aim for mostly veggies in my chop, with grains and other stuff making up less than a quarter of the finished product.
When selecting veggies, I try to pick out at least one dark green leafy vegetable (kale, bok choy, swiss chard, collard greens, broccoli, dandelion greens, turnip/beet greens, mustard greens etc), one or two orange veggies (carrots, squash, sweet potato, pumpkin, etc), and how ever many other veggies as I feel like throwing in after that (brussel sprouts, peas, beet root, bell peppers, cauliflower, ginger, radishes, parsnips, green beans, etc)
The orange veggies are a good source of beta carotene. The green ones tend to be rich in a variety of good things. Avoid giving too much spinach or kale, since it can bind calcium. A little is fine.
I like colorful chop, so I try to get plenty of red, green, and yellow veggies. I rinse them, chop them, then run them through the food processor individually. When they are diced to my preferred size, I mix everything together in a large bowl, then portion the chop out into snack sized ziplock bags to go into the freezer. Once frozen, the little bags go into a big freezer bag and I put a date on it. I pull out a frozen bag the day before I plan on using it, so it can thaw in the fridge. Then I put the thawed chop in treat cups and offer it to my parakeets.