When my kids started eating rice cereal as babies, we knew we wanted to start feeding them oatmeal every morning as soon as possible. (My mom always told me oatmeal ‘sticks to your ribs’ all morning long.) Around the 9-12 month mark, we started blending up the oats and feeding them oatmeal for breakfast every day. They loved it! As they got older, we stopped blending the oats and they still eat it every morning. You can substitute almost any other grain for the oats, or do a mixture of grains. Millet, brown rice, etc. Our favorite are the organic whole rolled oats from the Whole Foods bulk section.
We use part of a Plum organics fruit pouch to add flavor and more nutrition. Alternatively, you can steam and puree any fruit, store it in the refrigerator and add it to the oatmeal when it’s done. I also like putting frozen blueberries and walnuts or pecans in the oats as the kids get older.