Iron is an essential mineral that is crucial for babies' growth and development. Iron plays several important roles in the body, including:

1. Oxygen transport: Iron is a key component of hemoglobin, a protein found in red blood cells that carries oxygen from the lungs to the rest of the body. Iron is also necessary for myoglobin, a protein found in muscle tissue that helps supply oxygen to muscles.

2. Brain development: Iron is essential for the development of the brain and nervous system. Iron helps with the production of neurotransmitters, which are chemicals that transmit signals between nerve cells in the brain.

3. Immune system function: Iron is necessary for the proper function of the immune system. It helps white blood cells fight infections and diseases.

Babies are born with a limited supply of iron, and their need for this mineral increases as they grow and develop. Iron-deficiency anemia is a common condition in babies and young children, and it can lead to delayed development, poor growth, and learning problems. Therefore, it is important for babies to get enough iron from their diet to support their growth and development.

If you are worried that baby is not getting enough animal-based iron, here are some of the best plant-based foods that are rich in iron for babies:

1. Lentils: Lentils are an excellent source of iron, protein, and fiber. They are also easy to digest, making them a great option for babies. You can make lentil soup or add them to purees for your baby.

2. Tofu: Tofu is a great source of iron and protein for babies who are on a plant-based diet. You can puree it or chop it up and add it to other foods.

3. Spinach: Spinach is a leafy green that is rich in iron, as well as other vitamins and minerals. You can add spinach to purees or chop it up and add it to other foods.

4. Broccoli: Broccoli is a great source of iron and vitamin C, which helps the body absorb iron. You can steam or roast broccoli and puree it for your baby.

5. Sweet potatoes: Sweet potatoes are a good source of iron and other nutrients. You can bake or boil sweet potatoes and puree them for your baby.

6. Chickpeas: Chickpeas are a good source of iron, protein, and fiber. You can puree them or mash them and add them to other foods.

7. Prunes: Prunes are high in iron and fiber, which can help with constipation. You can puree prunes or add them to other foods for your baby.

It is important to note that iron from plant-based sources is not as easily absorbed by the body as iron from animal sources. Therefore, it is important to include a variety of iron-rich foods in your baby's diet and to pair them with foods that are high in vitamin C, which can help the body absorb iron better.