To make it simple and easy, I just take some of whatever we're eating as a family, like steamed vegetables or spaghetti or soup before I add the milk, and blend it in my magic bullet and feed it to my baby. If we're going to have grilled veggies I buy an extra zuchinni or something to grill and blend for her, so I'm not doing extra work really other than blending it. So I throw what we're eating into the blender, especially as the baby gets older and can eat more things, because it's healthier.
I also to buy butternut squash or zuchinni, peas (pretty much whatever is in baby food jars) and cook it and blend it, then freeze it in an ice cube tray and then put the cubes in a freezer ziplock. I just pulled out a couple cubes at a time to feed her. And now that my baby is older I even throw in beans, cheese, or chicken or whatever we're eating for dinner and blend. You can also do cous cous (tiny pasta), rice, oatmeal, yogurt, boiled eggs, tofu, fresh fruit. My kids love bananas and I don't really even have to mash them.