Baby food & Rice Cereal.

Raquel
Can you mix rice cereal straight into gerber babyfood. 
Sweet potatoe and corn is my little mans favorite but it's kinda watery so I want to thicken it up.
Can I take the rice cereal straight from the container and mix it in with the sweet potatoes and corn? Or any other flavor?
Or do I have to mix it with Formula then mix it with the food?